Social Media Adoption, Usage And Impact In Business-To-Business (B2B) Context: A State-Of-The-Art Literature Review

Social media plays an important part in the digital transformation of businesses. This research provides a comprehensive analysis of the use of social media by business-to-business (B2B) companies. The current study focuses on the number of aspects of social media such as the effect of social media, social media tools, social media use, adoption of social media use and its barriers, social media strategies, and measuring the effectiveness of use of social media. This research provides a valuable synthesis of the relevant literature on social media in B2B context by analysing, performing weight analysis and discussing the key findings from existing research on social media. The findings of this study can be used as an informative framework on social media for both, academic and practitioners.


Introduction
The Internet has changed social communications and social behaviour, which lead to the development of new forms of communication channels and platforms (Ismagilova et al. 2017).Social media plays an important part in the digital transformation of businesses (Kunsman 2018).Digital transformation refers to the globally accelerated process of technical adaptation by companies and communities as a result of digitalisation (Sivarajah et al. 2019;Westerman et al. 2014).Web is developed from a tool used to provide passive information into the collaborative web, which allows and encourages active user engagement and contribution.If before social networks were used to provide the information about a company or brand, nowadays businesses use social media in their marketing aims and strategies to improve consumers' involvement, relationship with customers and get useful consumers' insights (Alalwan et al. 2017).Business-to-consumer (B2C) companies widely use social media as part of their digital transformation and enjoy its benefits such as an increase in sales, brand awareness, and customer engagement to name a few (Barreda et al. 2015;Chatterjee and Kar 2020;Harrigan et al. 2020;Kamboj et al. 2018;Kapoor et al. 2018).
From a marketing and sales research perspective, social media is defined as "the technological component of the communication, transaction and relationship building functions of a business which leverages the network of customers and prospects to promote value co-creation" (Andzulis et al. 2012 p.308).Industrial buyers use social media for their purchase as they compare products, research the market and build relationships with salesperson (Itani et al. 2017).Social media changed the way how buyers and sellers interact (Agnihotri et al. 2016) by enabling open and broad communications and cooperation between them (Rossmann and Stei 2015).Social media is an important facilitator of relationships between a company and customers (Agnihotri et al. 2012;Tedeschi 2006).Customers are more connected to companies, which make them more knowledgable about product selection and more powerful in buyer-seller relationships (Agnihotri et al. 2016).Social media also helps companies to increase business exposure, traffic and providing marketplace insight (Agnihotri et al. 2016;Stelzner 2011).As a result, the use of social media supports business decision processes and helps to improve companies' performance (Rossmann and Stei 2015).
Due to digitalisation customers are becoming more informed and rely less on traditional selling initiatives (Ancillai et al. 2019).Buyers are relying more on digital resources and their buying process more often involves the use of social media.For example, in the research B2B buyer survey, 82% of buyers stated that social media content has a significant impact on the purchase decision (Ancillai et al. 2019;Minsky and Quesenberry 2016).As a result, these changes in consumer behaviour place high pressure on B2B salespeople and traditional sales companies (Ancillai et al. 2019).By using evidence from major B2B companies and consultancy report some studies claim that social media can be applied in sales to establish effective dialogues with buyers (Ancillai et al. 2019;Kovac 2016;McKinsey and Company 2015).Now, business-to-business (B2B) companies started using social media as part of their digital transformation.83% of B2B companies use social media, which makes it the most common marketing tactic (Pulizzi and Handley 2017;Sobal 2017).More than 70% of B2B companies use at least one of the "big 4" social media sites such as LinkedIn, Twitter, Facebook and YouTube.Additionally, 50% of the companies stated that social media has improved their marketing optimization and customer experience, while 25% stated that their revenue went up (Gregorio 2017;Sobal 2017).Even though B2B companies are benefitting from social media used by marketers, it is argued that research on that area is still in the embryonic stage and future research is needed (Salo 2017;Siamagka et al. 2015;Juntunen et al. 2020;Iannacci et al. 2020).There is a limited understanding of how B2B companies need to change to embrace recent technological innovations and how it can lead to business and societal transformation (Chen et al. 2012;Loebbecke and Picot 2015;Pappas et al. 2018).
The topic of social media in the context of B2B companies has started attracting attention from both academics and practitioners.This is evidenced by the growing number of research output within academic journals and conference proceedings.Some studies provided a comprehensive literature review on social media use by B2B companies (Pascucci et al. 2018;Salo 2017), but focused only on adoption of social media by B2B or social media influence, without providing the whole picture of the use of social media by B2B companies.Thus, this study aims to close this gap in the literature by conducting a comprehensive analysis of the use of social media by B2B companies and discuss its role in the digital transformation of B2B companies.The findings of this study can provide an informative framework for research on social media in the context of B2B companies for academics and practitioners.
The remaining sections of the study are organised as follows.Section 2 offers a brief overview of the methods used to identify relevant studies to be included in this review.Section 3 synthesises the studies identified in the previous section and provides a detailed overview.Section 4 presents weight analysis and its findings.Next section discusses the key aspects of the research, highlights any limitations within existing studies and explores the potential directions for future research.Finally, the paper is concluded in Section 6.

Literature Search Method
The approach utilised in this study aligns with the recommendations in Webster and Watson (2002).This study used a keyword search-based approach for identifying relevant articles (Dwivedi et al. 2019b;Ismagilova et al. 2020a;Ismagilova et al. 2019;Jeyaraj and Dwivedi 2020;Williams et al. 2015).Keywords such as "Advertising" OR "Marketing" OR "Sales" AND TITLE ("Social Media" OR "Web 2.0" OR "Facebook" OR "LinkedIn" OR "Instagram" OR "Twitter" OR "Snapchat" OR "Pinterest" OR "WhatsApp" OR "Social Networking Sites") AND TITLE-ABS-KEY ("B2B" OR "B to B" OR "Business to Business" OR "Business 2 Business") were searched via the Scopus database.Scopus database was chosen to ensure the inclusion of only high quality studies.Use of online databases for conducting a systematic literature review became an emerging culture used by a number of information systems research studies (Dwivedi et al. 2019a;Gupta et al. 2019;Ismagilova et al. 2020b;Muhammad et al. 2018;Rana et al. 2019).The search resulted in 80 articles.All studies were processed by the authors in order to ensure relevance and that the research offered a contribution to the social media in the context B2B discussion.The search and review resulted in 70 articles and conference papers that formed the literature review for this study.The selected studies appeared in 33 separate journals and conference proceedings, including journals such as Industrial Marketing Management, Journal of Business and Industrial Marketing and Journal of Business Research.

Literature Synthesis
The studies on social media research in the context of B2B companies were divided into the following themes: effect of social media, adoption of social media, social media strategies, social media use, measuring the effectiveness of use of social media, and social media tools (see Table 1).The following subsections provide an overview of each theme.

Effect of Social Media
Some studies focus on the effect of social media for B2B companies, which include customer satisfaction, value creation, intention to buy and sales, building relationships with customers, brand awareness, knowledge creation, perceived corporate credibility, acquiring of new customers, salesperson performance, employee brand engagement, and sustainability (Table 2).

Customer Satisfaction
Some studies investigated how the use of social media affected customer satisfaction (Agnihotri et al. 2016;Ancillai et al. 2019;Rossmann and Stei 2015).For example, Agnihotri et al. (2016) investigated how the implementation of social media by B2B salesperson affects consumer satisfaction.Salesperson's social media use is defined as a "salesperson's utilization and integration of social media technology to perform his or her job" (Agnihotri et al. 2016, p.2).The study used data from 111 sales professionals involved in B2B industrial selling to test the proposed hypotheses.It was found that a salesperson's use of social media will have a positive effect on information communication, which will, in turn, lead to improved customer satisfaction with the salesperson.Also, it was investigated that information communication will be positively related to responsiveness, which impacts customer satisfaction.
Another study by Rossmann and Stei (2015) looked at the antecedents of social media use, social media use by B2B companies and their effect on customers.By using data from 362 chief information officers of B2B companies the study found the following.Social media usage of sales representative has a positive impact on customer satisfaction.Age has a negative effect on content generation.It seems that older salespeople use social media in passive ways or interacting with the customer rather than creating their own content.It was found that the quality of corporate social media strategy has a positive impact on social media usage in terms of the consumption of information, content generation, and active interaction with customers.Also, the expertise of a salesperson in the area of social media has a positive impact on social media usage.

Value Creation
Research in B2B found that social media can create value for customers and salesperson (Agnihotri et al. 2012;Agnihotri et al. 2017).Agnihotri et al. (2012) proposed a theoretical framework to explain the mechanisms through which salespeople's use of social media operates to create value and propose a strategic approach to social media use to achieve competitive goals.The study draws on the existing literature on relationship marketing, task-technology fit theory, and sales service behavior to sketch a social media strategy for businessto-business sales organizations with relational selling objectives.The proposed framework describes how social media tools can help salespeople perform service behaviors (information sharing, customer service, and trust-building) leading to value creation.Some researchers investigated the role of the salesperson in the value creation process after closing the sale.By employing salesperson-customer data within a business-to-business context, Agnihotri et al. (2017) analysed the direct effects of salesbased CRM technology on the post-sale service behaviors: diligence, information communication, inducements, empathy, and sportsmanship.Additionally, the study examines the interactive effects of sales-based CRM technology and social media on these behaviors.The results indicate that sales-based CRM technology has a positive influence on salesperson service behaviors and that salespeople using CRM technology in conjunction with social media are more likely to exhibit higher levels of SSBs than their counterparts with low social media technology use.Data were collected from 162 salespeople from India.SmartPLS was used to analyse the data.

Intention to Buy and Sales
Another group of studies investigated the effect of social media on the level of sales and consumer purchase intention (Ancillai et al. 2019;Itani et al. 2017;Salo 2017;Hsiao et al. 2020;Mahrous 2013).For example, Itani et al. (2017) used the theory of reasoned actions to develop a model that tests the factors affecting the use of social media by salesperson and its impact.By collecting data from 120 salespersons from different industries and using SmartPLS to analyse the data, it was found that attitude towards social media usefulness did not affect the use of social media.It was found that social media use positively affects competitive intelligence collection, adaptive selling behaviour, which in turn influenced sales performance.Another study by Ancillai et al. (2019) used in-depth interviews with social selling professionals.The findings suggest that the use of social media improves not only the level of sales but also affects relationship and customer performance (trust, customer satisfaction, customer referrals); and organisational performance (organisational selling performance and brand performance).
It was investigated that social media has a positive effect on the intention to purchase (Hsiao et al. 2020;Mahrous 2013).For instance, Mahrous (2013) by reviewing the literature on B2B and B2C companies concluded that social media has a significant influence on consumer buying behaviour.

Customer Relationships
Another group of studies focused on the effect of social media on customer relationships (Bhattacharjya and Ellison 2015;Gáti et al. 2018;Gruner and Power 2018;Hollebeek 2019;Iankova et al. 2018;Jussila et al. 2011;Kho 2008;Niedermeier et al. 2016;Ogilvie et al. 2018).For example, Bhattacharjya and Ellison (2015) investigated the way companies build relationships with customers by using responsive customer relationship management.The study analysed customer relationship management activities from Twitter account of a Canadian company Shopify (B2B service provider).The company uses Twitter to engage with small business customers, develops and consumers.Jussila et al. (2011), by reviewing the literature, found that social media leads to increased customer focus and understanding, increased level of customer service and decreased time-to-market.Gáti et al. (2018) focused their research efforts on social media use in customer relationship performance, particularly in customer relations.The study investigated the adoption and impact of social media by salespeople of B2B companies.By using data of 112 salespeople from several industries the study found that the intensity of technology use positively affects attitude towards social media, which positively affects social media use.Intensive technology use in turn positively affects customer relationship performance (customer retention).PLS-SEM was applied for analysis.
Another study by Gruner and Power (2018) investigated the effectiveness of the use of multiple social media platforms in communications with customers.By using data from 208 large Australian organisations, the paper explores how companies' investment in one form of social media impacts activity on another form of social media.A regression analysis was performed to analyse the data.It was found that widespread activities on LinkedIn, Twitter and YouTube have a negative effect on a company's marketing activity on Facebook.Thus, having it is more effective for the company to focus on a specific social media platform in forming successful interorganisational relationships with customers.Hollebeek (2019) proposed an integrative S-D logic/ resource-based view (RBV) model of customer engagement.The proposed model considers business customer actors and resources in driving business customer resource integration, business customer resource integration effectiveness and business customer resource integration efficiency, which are antecedents of business customer engagement.Business customer engagement, in turn, results in business customer co-creation and relationship productivity.Niedermeier et al. (2016) investigated the use of social media among salespeople in the pharmaceutical industry in China.Also, the study investigated the impact of social media on building culturally specific Guanxi relationships-it involves the exchange of factors to build trust and connection for business purpose.By using in-depth interviews with 3 sales managers and a survey of 42 pharmaceutical sales representatives that study found that WeChat is the most common social media platform used by businesses.Also, it was found to be an important tool in building Guanxi.Future studies should focus on other industries and other types of cultural features in doing business.Ogilvie et al. (2018) investigated the effect of social media technologies on customer relationship performance and objective sales performance by using two empirical studies conducted in the United States.The first study used 375 salespeople from 1200 B2B companies.The second study used 181 respondents from the energy solution company.It was found that social media significantly affects salesperson product information communication, diligence, product knowledge and adaptability, which in turn affect customer relationship performance.It was also found that the use of social media technologies without training on technology will not lead to good results.Thus, the results propose that companies should allocate the resources required for the proper implementation of social media strategies.Future research should examine how the personality traits of a salesperson can moderate the implementation of social media technologies.
While most of the studies focused on a single country, Iankova et al. (2018) investigated the perceived effectiveness of social media by different types of businesses in two countries.By using 449 respondents from the US and the UK businesses, it was found that social media is potentially less important, at the present time, for managing ongoing relationships in B2B organizations than for B2C, Mixed or B2B2C organizations.All types of businesses ascribe similar importance to social media for acquisition-related activities.Also it was found that B2B organizations see social media as a less effective communication channel, and to have less potential as a channel for the business.

Brand Awareness
Some researchers argued that social media can influence brand awareness (Ancillai et al. 2019;Hsiao et al. 2020).For instance, Hsiao et al. (2020) investigated the effect of social media in the fashion industry.By collecting 1395 posts from lookbook.nuand employing regression analysis it was found that the inclusion of national brand and private fashion brands in the post increased the level of popularity which leads to purchasing interest and brand awareness.

Knowledge Creation
Multiple types of collaborative web tools can help and significantly increase the collaboration and the use of the distributed knowledge inside and outside of the company (McAfee 2006).Kärkkäinen et al. (2011) by analysing previous literature on social media proposed that social media use has a positive effect on sharing and creation of customer information and knowledge in the case of B2B companies.

Corporate Credibility
Another study by Kho (2008) states the advantages of using social media by B2B companies, which include faster and more personalised communications between customer and vendor, which can improve corporate credibility and strengthen the relationships.Thanks to social media companies can provide more detailed information about their products and services.Kho (2008) also mentions that customer forums and blog comments in the B2B environment should be carefully monitored in order to make sure that inappropriate discussions are taken offline and negative eWOM communications should be addressed in a timely manner.
3.1.8Acquiring New Customers Meire et al. (2017) investigated the impact of social media on acquiring B2B customers.By using commercially purchased prospecting data, website data and Facebook data from beverage companies the study conducted an experiment and found that social media us an effective tool in acquiring B2B customers.Future work might assess the added value of social media pages for profitability prediction instead of prospect conversion.When a longer timeframe becomes available (e.g., after one year), the profitability of the converted prospects can be assessed.
3.1.9Salesperson Performance Moncrief et al. (2015) investigated the impact of social media technologies on the role of salesperson position.It was found that social media affects sales management functions (supervision, selection, training, compensation, and deployment) and salesperson performance (role, skill, and motivation).Another study by Rodriguez et al. (2012) examines the effect of social media on B2B sales performance by using social capital theory and collecting data from 1699 B2B salespeople from over 25 different industries.By employing SEM AMOS, the study found that social media usage has a positive significant relationship with selling companies' ability to create opportunities and manage relationships.The study also found that social media usage has a positive and significant relationship with sales performance (based on relational measurers of sales that focus on behaviours that strengthen the relationship between buyers and sellers), but not with outcome-based sales performance (reflected by quota achievement, growth in average billing size, and overall revenue gain).

Employee Brand Management
The study by Pitt et al. (2018) focuses on employee engagement with B2B companies on social media.By using results from Glassdoor (2315 five-star and 1983 one-star reviews for the highest-ranked firms, and 1013 five star and 1025 one-star reviews for lowest ranked firms) on employee brand engagement on social media, two key drivers of employee brand engagement by using the content analysis tool DICTION were identified-optimism and commonality.Individuals working in top-ranked companies expressed a higher level of optimism and commonality in comparison with individuals working in low-ranked companies.As a result, a 2 × 2 matrix was constructed which can help managers to choose strategies in order to increase and improve employee brand engagement.Another study by Pitt et al. (2017) focused on employee engagement of B2B companies on social media.By using a conceptual framework based on a theory of word choice and verbal tone and 6300 reviews collected from Glassdoor and analysed using DICTION.The study found that employees of highly ranked B2B companies are more positive about their employer brand and talk more optimistically about these brands.For low ranked B2B companies it was found that employees express a greater level of activity, certainty, and realism.Also, it was found that they used more aggressive language.

Sustainability
Sustainability refers to the strategy that helps a business "to meet its current requirements without compromising its ability to meet future needs" (World Commission Report on Environment and Development 1987, p 41).Two studies out of 70 focused on the role of social media for B2B sustainability (Sivarajah et al. 2019;Kasper et al. 2015).For example, Sivarajah et al. (2019) argued that big data and social media within a participatory web environment to enable B2B organisations to become profitable and remain sustainable through strategic operations and marketing related business activities.
Another study by Kasper et al. (2015) proposed the Social Media Matrix which helps companies to decide which social media activities to execute based on their corporate and communication goals.The matrix includes three parts.The first part is focusing on social media goals and task areas, which were identified and matched.The second part consists of five types of social media activities (content, interaction/dialog, listening and analysing, application and networking).The third part provides a structure to assess the suitability of each activity type on each social media platform for each goal.The matrix was successfully tested by assessing the German B2B sector by using expert interviews with practitioners.
Based on the reviewed studies, it can be seen that if used appropriately social media have positive effect on B2B companies before and after sales, such as customer satisfaction, value creation, intention to buy and sales, customer relationships, brand awareness, knowledge creation, corporate credibility, acquiring new customers, salesperson performance, employee brand management, and sustainability.However, limited research is done on the negative effect of social media on b2b companies.

Adoption of Social Media
Some scholars investigated factors affecting the adoption of social media by B2B companies (Buratti et al. 2018;Gáti et al. 2018;Gazal et al. 2016;Itani et al. 2017;Kumar and Möller 2018;Lacka and Chong 2016).For instance, Lacka and Chong (2016) investigated factors affecting the adoption of social media by B2B companies from different industries in China.The study collected the data from 181 respondents and used the technology acceptance model with Nielsen's model of attributes of system acceptability as a theoretical framework.By using SEM AMOS for analysis the study found that perceived usability, perceived usefulness, and perceived utility positively affect adoption and use of social media by B2B marketing professionals.The usefulness is subject to the assessment of whether social media sites are suitable means through which marketing activities can be conducted.The ability to use social media sites for B2B marketing purposes, in turn, is due to those sites learnability and memorability attributes.
Another study by Müller et al. (2018) investigated factors affecting the usage of social media.By using survey data from 100 Polish and 39 German sensor suppliers, it was found that buying frequency, the function of a buyer, the industry sector and the country does not affect the usage of social media in the context of sensor technology from Poland and Germany.The study used correlation analysis and ANOVA.Lashgari et al. (2018) studied the adoption and use of social media by using face-to-face interviews with key managers of four multinational corporations and observations from companies' websites and social media platforms.It was found that that the elements essential in forming the B2B firm's social media adoption strategies are content (depth and diversity), corresponding social media platform, the structure of social media channels, the role of moderators, information accessibility approaches (public vs. gated-content), and online communities.These elements are customized to the goals and target group the firm sets to pursue.Similarly, integration of social media into other promotional channels can fall under an ad-hoc or continuous approach depending on the scope and the breadth of the communication plan, derived from the goal.
Similar to Lashgari et al. (2018), Shaltoni (2017) used data from managers.The study applied technology organisational environmental framework and diffusion of innovations to investigate factors affecting the adoption of social media by B2B companies.By using data from marketing managers or business owners of 480 SMEs, the study found that perceived relative advance, perceive compatibility, organizational innovativeness, competitor pressure, and customer pressure influence the adoption of social media by B2B companies.The findings also suggest that many decision-makers in B2B companies think that Internet marketing is not beneficial, as it is not compatible with the nature of B2B markets.Buratti et al. (2018) investigated the adoption of social media by tanker shipping companies and ocean carriers.By using data from 60 companies the following was found.LinkedIn is the most used tool, with a 93.3% adoption rate.Firm size emerges as a predictor of Twitter's adoption: big companies unveil a higher attitude to use it.Finally, the country of origin is not a strong influential factor in the adoption rate.Nonetheless, Asian firms clearly show a lower attitude to join SM tools such as Facebook (70%) and LinkedIn (86.7%), probably also due to governmental web restrictions imposed in China.External dimensions such as the core business, the firm size, the geographic area of origin, etc., seem to affect network wideness.Firm size, also, discriminates the capacity of firms to build relational networks.Bigger firms create networks larger than small firms do.Looking at geographical dimensions, Asian firms confirm to be far less active on SM respect to European and North American firms.Finally, the study analyzed the format of the contents disclosed by sample firms, observing quite limited use of photos and videos: in the sample industries, informational contents seem more appropriate for activating a dialogue with stakeholders and communication still appears formulated in a very traditional manner.Preliminary findings suggest that companies operating in conservative B2B services pursue different strategic approaches toward SMM and develop ad hoc communication tactics.Nonetheless, to be successful in managing SM tools, a high degree of commitment and a clear vision concerning the role of SM within communication and marketing strategy is necessary.Gazal et al. (2016) investigated the adoption and measuring of the effectiveness of social media in the context of the US forest industry by using organisational-level adoption framework and TAM.By using data from 166 companies and performing regression analysis, the following results were received.Years in business, new sales revenue, product type, amount of available information on a company website, perceived importance of e-commerce and perceived ease of use of social media significantly affected social media use.Also, it was found that companies' strategies and internal resources and capabilities and influence a company's decision to adopt social media.Also, it was found that 94 of respondents do not measure the ROI from social media use.The reason is that the use of social media in marketing is relatively new and companies do not possess the knowledge of measuring ROI from the use of social media.Companies mostly use quantitative metrics (number of site visits, number of social network friends, number of comments and profile views) and qualitative metrics (growth of relationships with the key audience, audience participation, moving from monologue to dialogue with consumers.Facebook was found to be the most effective social media platform reported by the US forest industry. The study by Kumar and Möller (2018) investigated the role of social media for B2B companies in their recruitment practices.By using data from international B2B company with headquarter in Helsinki, Finland comprised of 139 respondents it was found that brand familiarity encourages them to adopt social media platforms for a job search; however, the effect of the persuasiveness of recruitment messages on users' adoption of social media platforms for their job search behavior is negative.The study used correlation analysis and descriptive analysis to analyse the data.Nunan et al. (2018) identified areas for future research such as patterns of social media adoption, the role of social media platforms within the sales process, B2B consumer engagement and social media, modeling the ROI of social media, and the risks of social media within B2B sales relationships.
The study by Pascucci et al. (2018) conducted a systematic literature review on antecedents affecting the adoption and use of social media by B2B companies.By reviewing 29 studies published in academic journal and conferences from 2001 to 2017, the study identified external (pressure from customers, competitors, availability of external information about social media) and internal factors (personal characteristicsmanagers age, individual commitment, perceptions of social media-perceived ease of use, perceived usefulness, perceived utility), which can affect adoption of social media.
The study by Siamagka et al. (2015) aims to investigate factors affecting the adoption of social media by B2B organisations.The conceptual model was based on the technology acceptance model and the resource-based theory.AMOS software and Structural equation modelling were employed to test the proposed hypotheses.By using a sample of 105 UK companies, the study found that perceived usefulness of social media is influenced by image, perceived ease of use and perceived barriers.Also, it was found that social media adoption is significantly determined by organisational innovativeness and perceived usefulness.Additionally, the study tested the moderating role of organisational innovativeness and found that it does not affect the adoption of social media by B2B organisations.The study also identified that perceived barriers to SNS (uncertainty about how to use SNS to achieve objectives, employee's lack of knowledge about SNS, high cost of investment needed to adopt the technology) have a negative impact on perceived usefulness of social media by B2B organisations.The study also used nine in-depth interviews with B2B senior managers and social media specialists about adoption of social media by B2B.It was found that perceived pressure from stakeholders influences B2B organisations' adoption intention of social media.Future research should test it by using quantitative methods.
While most of the studies focused on the antecedents of social media adoption by B2B companies, Michaelidou et al. (2011) investigated the usage, perceived barriers and measuring the effectiveness of social media.By using data from 92 SMEs the study found that over a quarter of B2B SMEs in the UK are currently using SNS to achieve brand objectives, the most popular of which is to attract new customers.The barriers that prevent SMEs from using social media to support their brands were lack of staff familiarity and technical skills.Innovativeness of a company determined the adoption of social media.It was found that most of the companies do not evaluate the effectiveness of their SNS in supporting their brand.The most popular measures were the number of users joining the groups/discussion and the number of comments made.The findings showed that the size of the company does not influence the usage of social media for small and medium-sized companies.Future research should investigate the usage of social media in large companies and determine if the size can have and influence on the use.The benefits of using social media include increasing awareness and communicating the brand online.B2B companies can employ social media to create customer value in the form of interacting with customers, as well as building and fostering customer relationships.Future research should investigate the reasons why most of the users do not assess the effectiveness of their SNS.Future research should also investigate how the attitude towards technology can influence the adoption of social media.
Based on the reviewed studies it can be seen that the main factors affecting the adoption of social media by B2B companies are perceived usability, technical skills of employees, pressure from stakeholders, perceived usefulness and innovativeness.

Social Media Strategies
Another group of studies investigated types of strategies B2B companies apply (Cawsey and Rowley 2016;Huotari et al. 2015;Kasper et al. 2015;McShane et al. 2019;Mudambi et al. 2019;Swani et al. 2013;Swani et al. 2014;Swani et al. 2017;Watt 2010).For example, Cawsey and Rowley (2016) focused on the social media strategies of B2B companies.By conducting semi-structured interviews with marketing professionals from France, Ireland, the UK and the USA it was found that enhancing brand image, extending brand awareness and facilitating customer engagement were considered the most common social media objective.The study proposed the B2B social media strategy framework, which includes six components of a social media strategy: 1) monitoring and listening 2) empowering and engaging employees 3) creating compelling content 4) stimulating eWOM 5) evaluating and selecting channels 6) enhancing brand presence through integrating social media.Chirumalla et al. (2018) focused on the social media engagement strategies of manufacturing companies.By using semi-structured interviews (36), observations (4), focus group meetings (6), and documentation, the study developed the process of social media adoption through a three-phase engagement strategy which includes coordination, cooperation, and co-production.McShane et al. (2019) proposed social media strategies to influence online users' engagement with B2B companies.Taking into consideration fluency lens the study analysed Twitter feeds of top 50 social B2B brands to examine the influence of hashtags, text difficulty embedded media and message timing on user engagement, which was evaluated in terms of likes and retweets.It was found that hashtags and text difficulty are connected to lower levels of engagement while embedded media such as images and videos improve the level of engagement.Swani et al. (2014) investigate the use of Twitter by B2B and B2C companies and predict factors that influence message strategies.The study conducted a longitudinal content analysis by collecting 7000 tweets from Fortune 500 companies.It was found that B2B and B2C companies used different message appeals, cues, links and hashtags.B2B companies tend to use more emotional than functional appeals.It was found that B2B and B2C companies do not use hard-sell message strategies.
Another study by Swani et al. (2013) aimed to investigate message strategies that can help in promoting eWOM activity for B2B companies.By applying content analysis and hierarchical linear modeling the study analysed 1143 wall post messages from 193 fortune 500 Facebook accounts.The study found that B2B account posts will be more effective if they include corporate brand names and avoid hard sell or explicitly commercial statement.Also, companies should use emotional sentiment in Facebook posts.Huotari et al. (2015) aimed to investigate how B2B marketers can influence content creation in social media.By conducting four face-to-face interviews with B2B marketers, it was found that a B2B company can influence content creation in social media directly by adding new content, participating in a discussion and removing content through corporate user accounts and controlling employees social media behaviour.Also, it can influence it indirectly by training employees to create desired content and perfuming marketing activities that influence other users to create content that is favorable for the company.
Most of the studies investigated the strategies and content of social media communications of B2B companies.However, the limited number of studies investigated the importance of CEO engagement on social media in the company's strategies.Mudambi et al. (2019) emphasise the importance of the CEO of B2B companies to be present and active on social media.The study discusses the advantages of social media presence for the CEO and how it will benefit the company.For example, one of the benefits for the CEO can be perceived as being more trustworthy and effective than non-social CEOs, which will benefit the company in increased customer trust.Mudambi et al. (2019) also discussed the platforms the CEO should use and posting frequencies depending on the content of the post.
From the above review of the studies, it can be seen that B2B companies social media strategies include enhancing brand image, extending brand awareness and facilitating customer engagement.Companies use various message strategies, such as using emotional appeal, use of brand names, and use of hashtags.Majority of the companies avoid hard sell or explicitly commercial statement.

Social Media Use
Studies investigated the way how companies used social media and factors affecting the use of social media by B2B (Andersson et al. 2013;Bernard 2016;Bolat et al. 2016;Denktaş-Şakar and Sürücü 2018;Dyck 2010;Guesalaga 2016;Habibi et al. 2015).For example, Vasudevan and Kumar (2018) investigated how B2B companies use social media by analysing 325 brand posts of Canon India, Epson India, and HP India on Linkedin, Facebook, and Twitter.By employing content analysis the study found that most of the posts had a combination of text and message.More than 50% of the posts were about product or brand-centric.The study argued that likes proved to be an unreliable measure of engagement, while shares were considered a more reliable metric.The reason was that likes had high spikes when brand posts were boosted during promotional activities.
Andersson and Wikström (2017) used case studies of three B2B companies to investigate reasons for using social media.It was found that companies use social media to enhance customer relationships, support sales and build their brands.Also, social media is used as a recruiting tool, a seeking tool, and a product information and service tool.Bell and Shirzad (2013) aimed to conduct social media use analysis in the context of pharmaceutical companies.The study analysed 54,365 tweets from the top five pharmaceutical companies.The study analysed the popular time slots, the average number of positive and negative tweets and its content by using Nvivo9.
Bernard (2016) aims to examine how chief marketing officers use social media.By using case studies from IBM experience with social media it was found that B2B CMO's are not ready to make use of social media.It was proposed that social media can be used for after-sales service, getting sales leads, engaging with key influencers, building the company's reputation and enhancing the industry status of key individuals.B2B firms need to exploit the capabilities of processing massive amounts of data to get the most from social media.Bolat et al. (2016) explore how companies apply mobile social media.By employing a grounded theory approach to analyse interviews from 26 B2B company representatives from UK advertising and marketing sector companies.It was found that companies use social media for branding, sensing market, managing relationships, and developing content.
Denktaş-Şakar and Sürücü (2018) investigated how social media usage influence stakeholder engagement focusing on the corporate Facebook page of 30 3PLs companies.In total 1532 Facebook posts were analysed.It was found that the number of followers, post sharing frequency, negatively affect stakeholder engagement.It was found that content including photos facilitates more stakeholder engagement (likes, comment, share) in comparison with other forms.Vivid posts and special day celebration posts strengthen relationships with stakeholders.Dyck (2010) discussed the advantages of using social media for the device industry.Social media can be used for product innovation and development, to build a team and collaborate globally.Also, there is an opportunity to connect with all of the stakeholders needed in order to deliver the device to the market.Additionally, it provides to receive feedback from customers (doctors, hospitals) in real-time.
The study by Guesalaga (2016) draws on interactional psychology theory to propose and test a model of usage of social media in sales, analysing individual, organizational, and customer-related factors.It was found that organizational competence and commitment to social media are key determinants of social media usage in sales, as well as individual commitment.Customer engagement with social media also predicts social media usage in sales, both directly and (mostly) through the individual and organizational factors analysed, especially organizational competence and commitment.Finally, the study found evidence of synergistic effects between individual competence and commitment, which is not found at the organizational level.The data obtained by surveying 220 sales executives in the United States were analysed using regression analysis.Habibi et al. (2015) proposed a conceptual model for the implementation of social media by B2B companies.Based on existing B2B marketing, social media and organisational orientational literature the study proposed that four components of electronic market orientation (philosophical, initiation, implementation and adoption) address different implementation issues faced in implementing social media.Katona and Sarvary (2014) presented a case of using social media by Maersk-the largest container shipping company in the world.The case provided details on the program launch and the integration strategy which focused on integrating the largest independent social media operation into the company's broader marketing efforts.Moore et al. (2013) provided insights into the understanding of the use of social media by salespersons.395 salespeople in B2B and B2C markets, utilization of relationship-oriented social media applications are presented and examined.Overall, findings show that B2B practitioners tend to use media targeted at professionals whereas their B2C counterparts tend to utilize more sites targeted to the general public for engaging in one-on-one dialogue with their customers.Moreover, B2B professionals tend to use relationshiporiented social media technologies more than B2C professionals for the purpose of prospecting, handling objections, and after-sale follow-up.Moore et al. (2015) investigated the use of social media between B2B and B2C salespeople.By using survey data from 395 sales professionals from different industries they found that B2B sales managers use social selling tools significantly more frequently than B2C managers and B2C sales representatives while conducting sales presentations.Also, it was found that B2B managers used social selling tools significantly more frequently than all sales representatives while closing sales.Müller et al. (2013) investigated social media use in the German automotive market.By using online analysis of 10 most popular car manufacturers online social networks and surveys of six manufacturers, 42 car dealers, 199 buyers the study found that social media communication relations are widely established between manufacturers and (prospective) buyers and only partially established between car dealers and prospective buyers.In contrast to that, on the B2B side, social media communication is rarely used.Social Online Networks (SONs) are the most popular social media channels employed by businesses.Manufacturers and car dealers focus their social media engagement, especially on Facebook.From the perspective of prospective buyers, however, forums are the most important source of information.
Sułkowski and Kaczorowska-Spychalska (2016) investigated the adoption of social media by companies in the Polish textile-clothing industry.By interviewing seven companies representatives of small and medium-sized enterprises the study found that companies started implementing social media activities in their marketing activities.
Vukanovic ( 2013) by reviewing previous literature on social media outlined advantages of using social media for B2B companies, which include: increase customer loyalty and trust, building and improving corporate reputation, facilitating open communications, improvement in customer engagement to name a few.Keinänen and Kuivalainen (2015) investigated factors affecting the use of social media by B2B customers by conducting an online survey among 82 key customer accounts of an information technology service company.Partial least squares path modelling was used to analysed the proposed hypotheses.It was found that social media private use, colleague support for using SM, age, job position affected the use of social media by B2B customers.The study also found that corporate culture, gender, easiness to use, and perception of usability did not affect the use of social media by B2B customers.
By using interviews and survey social media research found that mostly B2B companies use social media to enhance customer relationships, support sales, build their brands, sense market, manage relationships, and develop content.Additionally, some companies use it social media as a recruitment tool.The main difference between B2B and B2C was that B2B sales managers use social selling tools significantly more frequently than B2C managers.

Measuring the Effectiveness of Social Media
It is important for a business to be able to measure the effectiveness of social media by calculating return on investment (ROI).ROI is the relationship between profit and the investment that generate that profit.Some studies focused on the ways B2B companies can measure ROI and the challenges they face (Gazal et al. 2016;Michaelidou et al. 2011;Vasudevan and Kumar 2018).For example, Gazal et al. (2016) investigated the adoption and measuring of the effectiveness of social media in the context of the US forest industry by using organisational-level adoption framework and TAM.By using data from 166 companies it was found that 94% of respondents do not measure the ROI from social media use.The reason is that the use of social media in marketing is relatively new and companies do not possess the knowledge of measuring ROI from the use of social media.Companies mostly use quantitative metrics (number of site visits, number of social network friends, number of comments and profile views) and qualitative metrics (growth of relationships with the key audience, audience participation, moving from monologue to dialogue with consumers).
Another study by Michaelidou et al. (2011) found that most of the companies do not evaluate the effectiveness of their SNS in supporting their brand.The most popular measures were the number of users joining the groups/discussion and the number of comments made.
Vasudevan and Kumar (2018) investigated how B2B companies use social media and measure ROI from social media by analysing 325 brand posts of Canon India, Epson India, and HP India on Linkedin, Facebook, and Twitter.By employing content analysis the study found that most of the post has a combination of text and message.More than 50% of the posts were about product or brand-centric.The study argued that likes proved to be an unreliable measure of engagement, while shares were considered a more reliable metric.The reason was that likes had high spikes when brand posts were boosted during promotional activities.Future research should conduct longitudinal studies.
By reviewing the above studies, it can be concluded that companies still struggle to find ways of measuring ROI and applying correct metrics.By gaining knowledge in how to measure ROI from social media activities, B2B companies will be able to produce valuable insights leading to better marketing strategies (Lal et al. 2020).

Social Media Tools
Some studies proposed tools that could be employed by companies to advance their use of social media.For example, Mehmet and Clarke (2016) proposed a social semiotic multimodal (SSMM) framework that improved the analysis of social media communications.This framework employs multimodal extensions to systemic functional linguistics enabling it to be applying to analysing non-language as well as language constituents of social media messages.Furthermore, the framework also utilises expansion theory to identify, categorise and analyse various marketing communication resources associated with marketing messages and also to reveal how conversations are chained together to form extended online marketing conversations.This semantic approach is exemplified using a Fairtrade Australia B2B case study demonstrating how marketing conversations can be mapped and analysed.The framework emphasises the importance of acknowledging the impact of all stakeholders, particularly messages that may distract or confuse the original purpose of the conversation.Yang et al. (2012) proposed the temporal analysis technique to identify user relationships on social media platforms.The experiment was conducted by using data from Digg.com.The results showed that the proposed techniques achieved substantially higher recall but not very good at precision.This technique will help companies to identify their future consumers based on their user relationships.
Based on the literature review, it can be seen that B2B companies can benefit by using the discussed tools.However, it is important to consider that employee should have some technical skills and knowledge to use these tools successfully.As a result, companies will need to invest some resources in staff training.

Weight Analysis
Weight analysis enables scrutiny of the predictive power of independent variables in studied relationships and the degree of effectiveness of the relationships (Jeyaraj et al. 2006;Rana et al. 2015;Ismagilova et al. 2020a).The results of weight analysis are depicted in Table 3 providing information about an independent variable, dependent variable, number of significant relationships, number of non-significant relationships, the total number of relationships and weight.To perform weight analysis, the number of significant relationships was divided by the total number of analysed relationships between the independent variable and the dependent variable (Jeyaraj et al. 2006;Rana et al. 2015).For example, the weight for the relationship between attitude towards social media and social media is calculated by dividing '1' (the number of significant relationships) by '2' (the total number of relationships) which equals 0.5.
A predictor is defined as well-utilised if it was examined five or more times, otherwise, it is defined as experimental.It can be seen from Table 3 that all relationships were examined less than five times.Thus all studied predictors are experimental.The predictor is defined as promising when it has been examined less than five times by existing studies but has a weight equal to '1' (Jeyaraj et al. 2006).From the predictors affecting the adoption of social media, it can be seen that two are promising, technical skills of employees and pressure from stakeholders.Social media usage is a promising predictor for acquiring new customers, sales, stakeholder engagement and customer satisfaction.Perceived ease of use and age of salesperson are promising predictors of social media usage.Even though this relationship was found to be significant every time it was examined, it is suggested that this variable, which can also be referred to as experimental, will need to be further tested in order to qualify as the best predictor.Another predictor, average rating of product/service, was examined less than five times with a weight equal to 0.75, thus it is considered as an experimental predictor.
Figure 1 shows the diagrammatic representation of the factors affecting different relationships in B2B social media with their corresponding weights, based on the results of weight analysis.The findings suggest that promising predictors should be included in further empirical studies to determine their overall performance.
It can be seen from Fig. 1 that social media usage is affected by internal (e.g.attitude towards social media, technical skills of employees) and external factors (e.g.pressure from stakeholders) of the company.Also, the figure depicts the effect of social media on the business (e.g.sales) and society (e.g.customer satisfaction).

Discussion
In reviewing the publications gathered for this paper, the following themes were identified.Some studies investigated the effect of social media use by B2B companies.By using mostly survey to collect the data from salespeople and managers, the studies found that social media has a positive effect on number of outcomes important for the business such as customer satisfaction, value creation, intention to buy and sales, customer relationships, brand awareness, knowledge creation, corporate credibility, acquiring new customers, salespersons performance, employee brand management, and sustainability.Most of the outcomes are similar to the research on social media in the context of B2C companies.However, some of the outcomes are unique for B2B context (e.g.employee brand management, company credibility).Just recently, studies started investigating the impact of the use of social media on sustainability.
Another group of studies looked at the adoption of social media by B2B companies (Buratti et al. 2018;Gáti et al. 2018;Gazal et al. 2016;Itani et al. 2017;Kumar and Möller 2018).The studies investigated it mostly from the perspectives of salespersons and identify some of the key factors which affect the adoption, such as innovativeness, technical skills of employees, pressure from stakeholders, perceived usefulness, and perceived usability.As these factors are derived mostly from surveys conducted with salespersons findings can be different for other individuals working in the organisation.This it is important to conduct studies that will examine factors affecting the adoption of social media across the entire organisation, in different departments.Using social media as part of the digital transformation is much bigger than sales and marketing, it encompasses the entire company.Additionally, most of the studies were cross-sectional, which limits the understanding of the adoption of social media by B2B over time depending on the outcomes and environment (e.g.competitors using social media).Some studies looked at social media strategies of B2B companies (Cawsey and Rowley 2016;Huotari et al. 2015;Kasper et al. 2015;McShane et al. 2019;Mudambi et al. 2019).By employing interviews with companies' managers and analysing its social media platforms (e.g.Twitter) it was found that most of the companies follow the following strategies: 1) monitoring and listening 2) empowering and engaging employees 3) creating compelling content 4) stimulating eWOM 5) evaluating and selecting channels 6) enhancing brand presence through integrating social media (Cawsey and Rowley 2016).Some studies investigated the difference between social media strategies of B2B and B2C companies.For example, a study by Swani et al. (2017) focused on effective social media strategies.By applying psychological motivation theory the study examined the key differences in B2B and B2C social media message strategies in terms of branding, message appeals, selling, and information search.The study used Facebook posts on brand pages of 280 Fortune companies.In total, 1467 posts were analysed.By using Bayesian models, the results showed that the inclusion of corporate brand names, functional and emotional appeals and information search cues increases the popularity of B2B messages in comparison with B2C messages.Also, it was found that readers of B2B content show a higher message liking rate and lower message commenting rate in comparison with readers of B2C messages.
It is important for companies to not only use social media to achieve positive business outcomes but also it is important to measure their achievements.As a result, some of the studies focused on the measuring effectiveness of social media (Gazal et al. 2016;Michaelidou et al. 2011;Vasudevan and Kumar 2018).Surprisingly, it was found that not so many companies measure ROI from social media (Gazal et al. 2016;Michaelidou et al. 2011).The ones who do it mostly use quantitative metrics (number of site visits, number of social network friends, number of comments and profile views) and qualitative metrics (growth of relationships with key audience, audience participation, moving from monologue to dialogue with consumers) (Gazal et al. 2016).Some future studies should investigate how ROI influences the strategy of B2B companies over period of time.
The last group of studies focused on social media tools used by B2B companies (Keinänen and Kuivalainen 2015;Mehmet and Clarke 2016;Yang et al. 2012).By using number of social media tools (Social Semiotic Multimodal) companies are able to improve their analysis of social media communications and identify their future consumers based on their user relationships.Studies investigating barriers and factors adoption of various social media tools by B2B companies are needed.
After reviewing studies on b2B social media, weight analysis was performed.Based on the results of weight analysis the conceptual model for future studies was proposed (Fig. 2).It is important to note that a limited number of studies focused and empirically tested factors affecting the adoption, use, and effect of social media.As a result, identified factors were considered as experimental (examined less than five times).It is too early to label these experimental predictors as worst or best, thus their further investigation is encouraged.
Additionally, our review of the literature on B2B social media identified dominant research methods used by scholars.Qualitative and quantitative techniques were used by most of these studies.Closer analysis of 70 publications reviewed in this study revealed the multiple techniques applied for gathering data.Quantitative methods used in the studies mostly used surveys (see Table 4).
The data was mostly gathered from salespersons, managers and data from social media platforms (e.g.Twitter, Facebook).Just a limited number of studies employed consumer reported data (see Table 5).
On the other hand, publications using qualitative methods mainly used interviews and web scraping for the collection of the required data.To analyse the data studies used a variety of techniques including SEM, regression analysis and content analysis being one of the most used (see Table 6).

Digital Transformation and Sustainability Model
Based on the conducted literature review and adapting the model by Pappas et al. (2018) Fig. 2 presents the digital transand sustainability model in the context of B2B companies, which conceptualise the social media ecosystems, and the factors that need to collaborate to enable the use of social media towards the achievement of digital transformation and the creation of sustainable societies.The model comprises of

Social Media Stakeholders
Building on the discussion and model provided by Pappas et al. (2018), this paper posits that the social media ecosystem comprises of the data stakeholders (company, society), who engage on social media (posting, reading, using information from social media).The use of social media by different stakeholders will lead to different effects affecting companies, customers and society.This is an iterative process based on which the stakeholders use their experience to constantly improve and evolve their use of social media, which has impacts on both, business and society.The successful implementation of this process is key to digital transformation and the creation of sustainable societies.Most of the current studies (Andersson et al. 2013;Bernard 2016;Bolat et al. 2016; Denktaş-Şakar Salesperson reported data Agnihotri et al. 2016;Gáti et al. 2018;Itani et al. 2017;Moore et al. 2013;Moore et al. 2015;Müller et al. 2013;Niedermeier et al. 2016;Ogilvie et al. 2018;Rodriguez et al. 2012;Rossmann and Stei 2015;Sułkowski and Kaczorowska-Spychalska 2016 Customers reported data Müller et al. 2013;Rossmann and Stei 2015 Manager reported data Andersson and Wikström 2017;Bolat et al. 2016;Cawsey and Rowley 2016;Guesalaga 2016;Huotari et al. 2015;Itani et al. 2017;Kasper et al. 2015;Keinänen and Kuivalainen 2015;Lashgari et al. 2018;Moore et al. 2015;Müller et al. 2013;Shaltoni 2017 Data from social media platforms Bell and Shirzad 2013;Bhattacharjya and Ellison 2015;Buratti et al. 2018;Denktaş-Şakar and Sürücü 2018;Gruner and Power 2018;Hsiao et al. 2020;McShane et al. 2019;Mehmet and Clarke 2016;Meire et al. 2017;Pitt et al. 2017;Pitt et al. 2018;Swani et al. 2013;Swani et al. 2014;Swani et al. 2017

Use of Social Media by B2B Companies
Social media affects not only ways how companies connect with their clients, but it is also changing their business models, the way how the value is delivered and profit is made.To successfully implement and use social media, B2B companies need to consider various social media tools, antecedents/ barriers of its adoption, identify suitable social media strategies which are in line with the company's overall strategy, and measure effectiveness of the use of social media.There are various factors that affect the use of social media by B2B companies.The study found that social media usage is influenced by perceived ease of use, adoption of social media, attitude towards social media and age of salesperson.
The majority of the studies focus on the management of the marketing department.However, digital transformation is much bigger than just marketing as it encompasses the entire organisation.As a result, future studies should look like the entire organisation and investigate barriers and factors affecting the use of social media.
It is crucial for companies to design content which will be noticed on social media by their potential, actual and former customers.Social media content should be interesting and offer some beneficial information, rather than just focus on services the company provides.Companies could use fresh views on relevant industry news, provide information how they are contributing to society and environment, include humour in their posts, share information about the team, make it more personal.It is also useful to use images, infographics, and video content.
It is also important for companies to measure digital marketing actions.More studies are needed on how to isolate the impact of specific media marketing actions to demonstrate their impact on the desired business outcomes (Salo 2017).Thus, future studies can consider how particular social media channels (e.g.Facebook, LinkedIn) in a campaign of a new product/ service influence brand awareness and sales level.Also, a limited number of studies discussed the way B2B companies can measure ROI.Future research should investigate how companies can measure intangible ROI, such as eWOM, brand awareness, and customer engagement (Kumar and Mirchandani 2012).Also, future research should investigate the reasons why most of the users do not assess the effectiveness of their SNS.Furthermore, most of the studies focused on likes, shares, and comments to evaluate social media engagement.Future research should focus on other types of measures.More research needs considering the impact of legislation on the use of social media by companies.Recent B2B studies did not consider recent legislation (General Data Protection Regulation 2018) in the context B2B (Sivarajah et al. 2019).

Effect of Social Media on Business and Society
Social media plays an important part in the company's decision-making process.Social media can bring positive changes into company, which will result in improving customer satisfaction, value creation, increase in sales, building relationships with customers, knowledge creation, improve the perception of corporate credibility, acquisition of new customers, and improve employment brand engagement.Using information collected from social media can help companies to have a set of reliable attributes that comprise social, economic and environmental aspects in their decision-making process (Tseng 2017).Additionally, by using social media B2B companies can provide information to other stakeholders on their sustainability activities.By using data from social media companies will be able to provide products and services which are demanded by society.It will improve the quality of life and result in less waste.Additionally, social media can be considered as a tool that helps managers to integrate business practices with sustainability (Sivarajah et al. 2019).As a result, social media use by B2B companies can lead to business and societal changes.
A limited number of studies investigated the effect of social media on word of mouth communications in the B2B context.Future research should investigate the differences and similarities between B2C and B2B eWOM communications.Also, studies should investigate how these types of communications can be improved and ways to deal with negative eWOM.It is important for companies to respond to comments on social media.Additionally, future research should investigate its perceived helpfulness by customers.
Majority of studies (Agnihotri et al. 2016;Ancillai et al. 2019;Rossmann and Stei 2015;Agnihotri et al. 2012;Agnihotri et al. 2017;Itani et al. 2017;Salo 2017;Bhattacharjya and Ellison 2015;Gáti et al. 2018;Gruner and Power 2018;Hollebeek 2019) investigated positive effect of social media such consumer satisfaction, consumer engagement, and brand awareness.However, it will be interesting to consider the dark side of social media use such as an excessive number of requests on social media to salespeople (Agnihotri et al. 2016), which can result in the reduction of the responsiveness; spread of misinformation which can damage the reputation of the company.
Studies were performed in China (Lacka and Chong 2016;Niedermeier et al. 2016), the USA (Guesalaga 2016;Iankova et al. 2018;Ogilvie et al. 2018), India (Agnihotri et al. 2017;Vasudevan and Kumar 2018), the UK (Bolat et al. 2016;Iankova et al. 2018;Michaelidou et al. 2011).It is strongly advised that future studies conduct research in other countries as findings can be different due to the culture and social media adoption rates.Future studies should pay particular attention to other emerging markets (such as Russia, Brazil, and South Africa) as they suffer from the slow adoption rate of social media marketing.Some companies in these countries still rely more on traditional media for advertising of their products and services, as they are more trusted in comparison with social media channels (Olotewo 2016).The majority of studies investigate the effect of social media in B2B or B2C context.Future studies should pay attention to other contexts (e.g.B2B2B, B2B2C).Another limitation of the current research on B2B companies is that most of the studies on social media in the context of B2B focus on the effect of social media use only on business outcomes.It is important for future research to focus on societal outcomes.
Lastly, most of the studies on social media in the context of B2B companies use a cross-sectional approach to collect the data.Future research can use the longitudinal approach in order to advance understanding of social media use and its impact over time.

Research Propositions
Based on the social media research in the context of B2B companies and the discussion above the following is proposed, which could serve as a foundation for future empirical work.
Social media is a powerful tool to deliver information to customers.However, social media can be used to get consumer and market insights (Kazienko et al. 2013).A number of studies highlighted how information obtained from a number of social media platforms could be used for various marketing purposes, such as understanding the needs and preferences of consumers, marketing potential for new products/services, and current market trends (Agnihotri et al. 2016;Constantinides et al. 2008).It is advised that future research employs a longitudinal approach to study the impact of social media use on understanding customers.Therefore, the following proposition can be formulated: Proposition 1 Social media usage of B2B companies has a positive influence on understanding its customers.
By using social media companies can examiner valuable information on competitors.It can help to understand competitors' habits and strategies, which can lead to the competitive advantage and help strategic planning (Dey et al. 2011;Eid et al. 2019;Teo and Choo 2001).It is advised that future research employs a longitudinal approach to study the impact of social media use on understanding its competitors.As a result, using social media to understand customers and competitors can create business value (Mikalef et al. 2020a) for key stakeholders and lead to positive changes in the business and societies.The above discussion leads to the following proposition: Proposition 2 Social media usage of B2B companies has a positive influence on understanding its competitors.
Proposition 3 Culture influences the adoption and use of social media by B2B companies.
Usage of social media can result in some positive marketing outcomes such as building new customer relationships, increasing brand awareness, and level of sales to name a few (Agnihotri et al. 2016;Ancillai et al. 2019;Dwivedi et al. 2020;Rossmann and Stei 2015).However, when social media is not used appropriately it can lead to negative consequences.If a company does not have enough resources to implement social media tools the burden usually comes on a salesperson.A high number of customer inquiries, the pressure to engage with customers on social media, and monitor communications happening on various social media platforms can result in the increased workload of a salesperson putting extra pressure (Agnihotri et al. 2016).As a result, a salesperson might not have enough time to engage with all the customers online promptly or engage in reactive and proactive web care.As a result, customer satisfaction can be affected as well as company reputation.To investigate the negative impact of social media research could apply novel methods for data collection and analysis such as fsQCA (Pappas et al. 2020), or implying eye-tracking (Mikalef et al. 2020b).This leads to the following proposition: Proposition 4 Inappropriate use of social media by B2B companies has a negative effect on a) customer satisfaction and b) company reputation.
According to Technology-Organisation-Environment (TOE) framework environmental context significantly affects a company's use of innovations (Abed 2020;Oliveira and Martins 2011).Environment refers to the factors which affect companies from outside, including competitors and customers.Adopting innovation can help companies to change the rules of the competition and reach a competitive advantage (Porter and Millar 1985).In a competitive environment, companies have a tendency to adopt an innovation.AlSharji et al. (2018) argued that the adoption of innovation can be extended to social media use by companies.A study by AlSharji et al. (2018) by using data from 1700 SMEs operating in the United Arab Emirates found that competitive pressure significantly affects the use of social media by SMEs.It can be explained by the fact that companies could feel pressure when other companies in the industry start adopting a particular technology and as a result adopt it to remain competitive (Kuan and Chau 2001).Based on the above discussion, the following proposition can be formulated: Proposition 5 Competitive pressure positively affects the adoption of social media by B2B companies.
Companies might feel that they are forced to adopt and use IT innovations because their customers would expect them to do so.Meeting customers' expectations could result in adoption of new technologies by B2B companies.Some research studies investigated the impact of customer pressure on companies (AlSharji et al. 2018;Maduku et al. 2016).For example, a study by Maduku et al. (2016) found that customer pressure has a positive effect on SMEs adoption of mobile marketing in the context of South Africa.Future research could implement longitudinal approach to investigate how environment affects adoption of social media by B2B companies.This leads to the formulation of the following proposition: Proposition 6 Customer pressure positively affects the adoption of social media by B2B companies.

Conclusion
The aim of this research was to provide a comprehensive systematic review of the literature on social media in the context of B2B companies and propose the framework outlining the role of social media in the digital transformation of B2B companies.It was found that B2B companies use social media, but not all companies consider it as part of their marketing strategies.The studies on social media in the B2B context focused on the effect of social media, antecedents, and barriers of adoption of social media, social media strategies, social media use, and measuring the effectiveness of social media.Academics and practitioners can employ the current study as an informative framework for research on the use of social media by B2B companies.The summary of the key observations provided from this literature review is the following: [i] Facebook, Twitter, and LinkedIn are the most famous social media platforms used by B2B companies, [ii] Social media has a positive effect on customer satisfaction, acquisition of new customers, sales, stakeholder engagement, and customer relationships, [iii] In systematically reviewing 70 publications on social media in the context of B2B companies it was observed that most of the studies use online surveys and online content analysis, [iv] Companies still look for ways to evaluate the effectiveness of social media, [v] Innovativeness, pressure from stakeholders, perceived usefulness, and perceived usability have a significant positive effect on companies' adoption to use social media, [vi] Lack of staff familiarity and technical skills are the main barriers that affect the adoption of social media by B2B, [vii] Social media has an impact not only on business but also on society, [viii] There is a dark side of social media: fake online reviews, an excessive number of requests on social media to salespeople, distribution of misinformation, negative eWOM, [ix] Use of social media by companies has a positive effect on sustainability, and [x] For successful digital transformation social media should change not only the way how companies integrate it into their marketing strategies but the way how companies deliver values to their customers and conduct their business.This research has a number of limitations.First, only publications from the Scopus database were included in literature analysis and synthesis.Second, this research did not use meta-analysis.To provide a broader picture of the research on social media in the B2B context and reconcile conflicting findings of the existing studies future research should conduct a metaanalysis (Ismagilova et al. 2020c).It will advance knowledge of the social media domain.
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material.If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
as Director -SCIT (A constituent of SIU under faculty of Computer Studies) for three and half years and then in July 2014 took charge as Director -SIBM (A constituent of SIU under faculty of Management).He is also the Dean -Faculty of Management at Symbiosis International University.Raman has travelled across the globe and has been instrumental in initiating academic collaborations with universities in Japan, Canada, UAE and the United States.He has initiated several international collaborations for exchange of student and faculty members with academic institutions across the globe.Raman's main research interest is at the interface of Information Systems, Information Security, IT Strategy and Digital Marketing.

Fig. 1
Fig. 1 Diagrammatic representation of results of weight analysis.Note: experimental predictors

Fig. 2
Fig. 2 Social media impact on digital transformation and sustainable societies

Table 3
Results of weight analysis

Table 4
Data collection methods used in studies on social media in B2B context

Table 5
Types of data used in studies on social media in B2B context