Windows Communication Foundation (WCF) is a framework for building
service-oriented applications. Using WCF, you can send data as
asynchronous messages from one service endpoint to another. A service
endpoint can be part of a continuously available service hosted by IIS,
or it can be a service hosted in an application. An endpoint can be a
client of a service that requests data from a service endpoint. The
messages can be as simple as a single character or word sent as XML, or
as complex as a stream of binary data.
ABCs of WCF
Address: Where exactly os your service hosted? In other words, what is the location of the service? An address could be an IP Address, server name, URL and so on.
Binding: It is about how the messages are handled in the service side and the client side. Binding is a group of elements that correspond to the transport and protocol channels located in the channel stack. The channel stack is the sequence of channels that each passes through to the runtime execution.
Contract: The contract is an agreement between the client and the server about the structure and content of messages being exchanged. The Data Contract is about the structure of the message, whereas the message contract is about the content of the message being exchanged.
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