MVVM Pattern

MVVM is an architectural pattern with the focus of removing UI cluttered code. It does the same by using an extra class called as view model. MVVM is mostly suitable for Silverlight and WPF projects because of the rich bindings provided by the technologies.

http://msdn.microsoft.com/en-us/magazine/dd419663.aspx

http://joel.inpointform.net/software-development/mvvm-vs-mvp-vs-mvc-the-differences-explained/