You can leverage the in-built support for dependency injection in ASP.NET Core to build applications that are modular, lean, and clean, easy to maintain and test.

Learn how to use constructor injection, property injection, method injection, and the service locator pattern in ASP.NET Core MVC 5, along with their caveats.

You can easily slide middleware and other custom code into the ASP.NET pipeline by taking advantage of the Microsoft implementation of the OWIN specification in the coming Visual Studio 2015.