Visual Studio Team Services (VSTS) is an extension of the Microsoft Visual Studio architecture that allows it to encompass development & testing teams, with special roles and tools for software architects, developer specialties and testers.
VSTS includes software development, collaboration, measurement and reporting tools that fall broadly into server-side and client-side applications.
Coverage :
1. Create Project
2. Define User Stories
3. Work with Sprints
4. Test Management Activities
5. Test Case Development and Execution