The actual web service meaning encompasses lots of different systems. Common practice of web service refers to clients and servers that communicate XML messages that follow the SOAP standard. It considers the terminology is the hypothesis that there is also a machine readable report of the operations supported by the server and explanation in the WSDL. At last there is no requirement of SOAP endpoint, but it is a prerequisite for automated client-side code generation in the conventional Java and .NET frameworks. For web service many organizations authorization of both SOAP and WSDL in their classification.