Microsoft Coded UI has been introduced with Visual Studio 2010. Initial day, when Visual Studio 2005 was available in the market and it comes as Test Edition. It can be used for the following testing related activities:

1. Unit Testing
2. Performance Testing
3. Web Test Automation
4. Manual Test

Comparing Visual Studio 2008 with 2005 there is no significance changes made in terms of testing features.
In Visual Studio 2010 Microsoft has introduced many functionalities as follows:

1. Microsoft Coded UI
2. Unit Test
3. Web Automation Test
4. Performance Test
5. Manual Test
6. Lab Management