Adaptive Method for Discovering Service Provider in Cloud Composite Services

Abstract

Application service providers implement Software-as-a-Service applications through a large number of Cloud Computing infrastructures. It is an increasingly challenging demand to discover trusted service providers based on services’ outputs. However, the quality of service output may descend due to: (a) internal application logic of a Cloud service and (b) competition of resources in the sharing-based Cloud systems. Therefore, we propose an efficient method of trusted service provider discovery, called TSD (Trusted Service Discovery), to ensure that each service instance of composite services in Cloud systems is trustworthy. TSD treats all services as black boxes, and evaluates the outputs of service providers in service classes to obtain their equivalent or nonequivalent relationships. According to the equivalent or nonequivalent relationships, trusted service providers can be found easily. TSD improves accuracy of processing results as shown in experiments.