model-view-controller (MVC) pattern for Web applications

ASP.NET MVC provides a framework that enables you to easily implement the model-view-controller (MVC) pattern for Web applications. This pattern lets you separate applications into loosely coupled, pluggable components for application design, processing logic, and display. ASP.NET MVC also greatly facilitates test -driven development (TDD).



http://www.hanselman.com/blog/ASPNETMVCPreview2ScreencastTutorials.aspx