TFS goes rather a bit further than just being a version control system. That said, I'm not entirely certain why they decided to implement TFVC (TFS's default -

TFS goes rather a bit further than just being a version control system. That said, I'm not entirely certain why they decided to implement TFVC (TFS's default - and until recently, only - version control system) instead of just basing it on SVN. Aside from that this was at the height of the period when Microsoft had a compulsive need to sink resources into building their own proprietary clone of every damn thing.