Step 1:
Creating WCF Service according to the requirement
Step 2 :
Creating Client Application
Step 3 :
Adding WCF service reference to client application
Step 4 :
Consuming WCF service from Client application
♣ A WCF service can be consumed by multiple client applications
♣ That client application can be windows application or web application or any type of application
♣ As well as a WCF service can be consumed by any technology development client. That means a WCF service can be consume by .Net client application or Java client application and vice versa. It is nothing but interoperability