What is WCF?

- Windows Communication Foundation is one of the API.

- Interoperability which is the ability of diverse the systems and organization can work together.

- Service Layer between application layer and business layer in three tier architecture.

- A combined features of Web Services, COM+, Remoting, MSMQ

- A common platform for all .Net communication.

- ABC is the three major points of WCF.

     o Address (Where)

           It is mandatory for WCF.

           Specify the location of service which is exposed for client

           Http, TCP, NamedPipe, MSMQ

           Defined with Uniform Resource Identifier (URI)

     o Binding (How)

           Specify how the client access the service.

           BasicHttpBinding, netTcpBinding, wsBinding

     o Contract (What)

           Specify what are the functions that service can do.

           ServiceContract (Interface)

           Must have service class to implement the service contract

           DataContract (get, set) which can be primitive data type or complex data type.

           OperationContract which is the method of ServiceContract.

- Must have endpoint

- Client can consume the services from the service host through endpoint.

This is just my knowledge.