Styles of Service Composition -- Analysis and Comparison Methods

Web services represent an important area of study for the process of communication without barriers among PCs running different operating systems, smart phones and other devices using applications built on different programming languages. Service composition indicates the development of a complex application using several web services and it is related to the language for specifying business process behavior or WS-BPEL. In this paper we will intent to compare and analyze two types of service composition, Orchestration and Choreography by using the comparison methods called “Architectural Decision” to determine differences and specify the type of business process they can be used to solve. Furthermore, we will analyze SOA paradigm and REST for using web services by defining their advantages and disadvantages, which is very important for software architects, which one to choose when dealing with web services.