On Service Composition in Cloud Computing: A Survey and an Ongoing Architecture

Cloud computing has become a widely used concept. It is characterized by its elasticity, its on demand services and the unlimited provided resources. However, because of the complexity of customers service requests, their provision became an increasingly difficult task. In fact, in order to meet these requirements, services should be combined to implement a composite one performing the requested task. It is in this sense that the use of SOA architecture, which provides service composition, seems a useful solution. This paper investigates existing works on services discovery and composition in SOA as well as Cloud architectures. We study and compare these works and present an architecture of services composition based on SOA architecture and Cloud computing.