The solution provides us with a set of templates. It reduces the development time because the templates give a pre-build structure. We can build our code on it. The solution provides automation testing tools that we can use for unit testing and stress testing. The product provides a mechanism to build our code and release it wherever we want. If we use CI/CD, we do not have to use Visual Studio.

Visual Studio Test Professional has allowed us to increase the quality of one of our web portal products drastically. We went two years with only one regression in our software because of the automated testing we built with Visual Studio Test. 

Source Control stores our sources securely and TFS assists in tracking our issues.

I haven't worked with any real projects, but did some R&D using TFS and MTM. MTM is very good for maintaining the test plan, test suite and all. Can link automation scripts with existing manual test cases.