ABSTRACT
This chapter discusses the design concepts and reviewed the state of the art of service-oriented computing model in pervasive computing from the perspective of openness and dynamism. The composite service allows Anne to input only her current location and speed and returns a 10-mile route that is less polluted. The service also returns an audio route stream that compacts with her smartwatch, guiding her through the training route. General service composition relies on previously generated conceptual composites and assigns service providers at runtime to complete them. A service provisioning system may need to dynamically reason about functionality and find an appropriate combination of microservices that supports it when an individual one is unavailable. Service composition's success in open and dynamic environments is subject to failures that can occur in any phase of the composition process. Support for services provision using composite services in such environments should include both composition process management and failure recovery.
