SOCA explores enabling technologies for development of E-commerce and facilitating knowledge and experience sharing of the latest research findings among researchers in the area. Service-Oriented Computing is a revolutionary discipline that may dramatically improve the current IT practices by shortening the software development life cycle and increasing software reusability and interoperability. However, its full potentials and applications have not been realized by research communities and by industry.SOCA 2007 covers the issues and practices related to the development of service-oriented computing, design and technology, including its theoretical foundations, service infrastructures, and their applications and experiences. The proceedings includes innovative service research from both academic and industry communities. Its scope includes service discovery, service composition, service quality, adaptive services and semantic services as well as Service-Oriented applications.