Why do we need WCF?

• With the help of WCF, we can satisfy the different clients developed with different technologies like Java, .NET etc. with a single WCF service to fulfill their requirement.
• Different clients may need requirements in different formats. That is one client may need in XML format and another may need in Binary Message Format. This requirement can be achieved with the help of WCF service.
• Even WCF services support different protocols like http, tcp etc.