What is the full form of TFS? Is this a versioning server?

 TFS stands for Team Foundation Server.

is a Microsoft product which provides source code management, reporting, requirements management, project management, automated builds, lab management, testing and release management capabilities. It covers the entire application lifecycle

 Versions:

 TFS2005

 TFS2008

 TFS2010

 TFS2012

 TFS2013

its a server that has variety software tool that can be used for application development & application analysis.

Team Foundation Server (Microsoft Visual Source Safe)