ASP.NET Web API is the technology built by Microsoft to expose web services. Because it is based on HTTP, it can communicate with a wide range of devices, any devices that can talk HTTP. This project template will illustrate one of the devices, Windows Phone, and focus on the code to write on the client side.
To invoke the Web API services in order to get the complete list of employees, or edit an employee, or add a new one or even delete one, the client will use the Json.Net and HTTP Client Libraries, which are installed as a Nuget packages inside the solution.
To view the both the client and server code of the project, visit: https://code.msdn.microsoft.com/Restful-Application-8b6aafdd
This project template is for Windows Store apps, and there's one for Windows Phone 8.1.