NOTE: Cross-posted from  Mathew Aniyan's BlogOriginal post:  http://blogs.msdn.com/b/mathew_aniyan/archive/2011/03/28/visual-studio-ui-test-extensibility-scenarios-amp-guiding-principles.aspx

 This blog delves into the design of extensibility model for Visual Studio UI Test Framework and lays out a roadmap which 3rd party UI Control vendors can use to build UI Testing support for their controls.