The development of Web services has so far mostly been the result of stan- dardization bodies usually operating on a consensus basis and driven by mar- ket considerations. In this context, innovation and long-term market effects are not usually primary concerns. Because of the global nature of the Web, the standardization process has so far been very fragmented, leading to com- peting and potentially incompatible Web service infrastructures. Many com- panies have invested very heavily in Web services technologies (Microsoft’s .NET, IBM’s Websphere, SUN’s J2EE, to name a few). These efforts have resulted in a fast-growing number of Web services being made available. The envisioned business model is expected to include a whole community of Web service providers that will compete to provide Web services. It is important that this investment produce the expected results. To maximize the benefits of this new technology, there is a need to provide a sound and clean method- ology for specifying, selecting, optimizing, and composing Web services. This needs to take place within a secure environment. The underlying foundation will enable designers and developers to reason about Web services to produce efficient Web Service Management Systems.
KeywordsService Instance Failure Recovery Service Ontology Service Query Skyline Computation
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