WCF is easy and simple. A large number of APIs are built inside .NET, which provides an easy way to implement a WCF service. Visual Studio provides the appropriate tools to create proxy classes automatically when a service reference is taken into a project such that the user only needs to configure the service with a proper endpoint address and the service will start working. In this recipe, we are going to look at the internal details and the API that you need to consider to create and connect services. We are not going to use the tools of Visual Studio to build this service. We will later explain how to make use of Visual Studio to quickly create services in other recipes.