Presentation project create a WCF service application by right clicking on solution. we will get Service1.svc and IService1.svc. rename the service if required. change the web config. <endpointBehaviors> <behavior> <webHttp /> </behavior> </endpointBehaviors> <services> <service name="ContactMangWCF.ContactManagerService" behaviorConfiguration=" myBehaviour "> <endpoint address="" binding="webHttpBinding" contract="ContactMangWCF.IContactManagerService"></endpoint> </service> </services> <serviceBehaviors> <behavior name=" myBehaviour "> <!-- To avoid disclosing metadata information, set the values below to false before deployment...