1. Install Unity using Nuget
Unity bootstrapper for ASP.NET MVC(This will install all dependencies as well)
2. MVC Unity adds the following files in App_Start
UnityMvcActivator.cs - Provides the bootstrapping for integrating Unity with ASP.NET MVC. The Start() and Shutdown() methods are automatically called when MVC application starts and stops (uses WebActivatorEx to do this automatically).UnityConfig.cs - This is where you register the type mappings.
The registration is done in RegisterTypes() method. It can be done with code here or can be loaded from web.config.
