ASP.NET MVC 4 provides a Model-View-Controller (MVC) framework for developing Web applications using Visual Studio 2010 SP1 or Visual Web Developer 2010 SP1.
ASP.NET MVC 4 is a framework for developing highly testable and maintainable Web applications that follow the Model-View-Controller (MVC) pattern. The framework encourages you to maintain a clear separation of concerns— views for UI, controllers for handling user input, and models for domain logic. ASP.NET MVC applications are particularly suited for unit testing and using test-driven development (TDD) techniques. ASP.NET MVC 4 makes it easy to write applications for the mobile web through adaptive rendering and device specific display modes.
ASP.NET MVC 4 also includes:
• ASP.NET Web API, a framework for building and consuming HTTP services that can reach a broad range of clients including browsers, phones, and tablets. ASP.NET Web API is great for building services that follow the REST architectural style, plus it supports RPC patterns.
• ASP.NET Web Pages and the new Razor syntax provide a fast, approachable, and lightweight way to combine server code with HTML to create dynamic web content.
• Web Optimization, a framework for bundling and minifying scripts and CSS files.
• NuGet, a free, open source developer focused package management system for the .NET platform intent on simplifying the process of incorporating third party libraries into a .NET application during development.