Web service is a standard representation for some computational or information resource on the Web that can be used by other programs. Service-based development, along with component-based development, is state-of-the-art in software reuse where the development process is geared to reusing existing software for other purposes or for other users. Service oriented architecture (SOA) is a way of developing distributed systems where the system components are stand-alone services, executing on geographically distributed computers. To provide direct support for the implementation of web service compositions, several web service standards have been developed. However, current web services standards have been criticized as being “heavyweight” standards that are over-general and inefficient. For this reason, some organizations use a simpler, more efficient approach to service communication using so-called RESTful services. There are two kinds of software processes in service-based software engineering – service engineering and software development with services. Service engineering is the process of developing services for reuse in service oriented applications. On the other hand, development of software using services is based on the idea that you compose and configure services to create new, composite services.