Abstract: Service-oriented computing is a research focus of current software engineering and software industries. With the widespread application of Web service composition, behavior interactions/collaborations among services become increasingly complicated. Current static mechanisms for service behavior adaptation are hardly to support adaptation of interactions/collaborations among complex Web services. Against this background, this paper firstly introduced fundamental concepts of Web service adaptation, and then analyzed the statcof-thcart of, and challenges to current static service behavior adaptation,finally discussed the basic principles,general methods of dynamic Web service behavior adaptation, and its advantage compared to static behavior adaptation mechanisms.

Key words: Service-oriented computing, Service adaptation, Static adaptation, Dynamic adaptation, Adaptor engine, Adaptor