Cloud computing is an emerging computing and business model where users can gain access to their applications from anywhere through their connected devices. The proliferation of intelligent mobile devices, high speed wireless connectivity, and rich browser-based Web 2.0 interfaces have made this shared network-based cloud computing model possible. Cloud Computing is very much driven by the increasingly unmanageable IT complexity. We will describe the main technology developments that have made this IT simplification possible: namely Virtualization, SOA, and Service/Systems Management. We believe that the Cloud will grow rapidly at the top SaaS layer (including Application services, Business services and People services). The Cloud model of services can improve the way we manage health care, finance, mobile information, and more; and will help us realize the vision of Intelligent Living. The speaker will also share his view on Cloud Computing opportunities for Taiwan.