This question comes from Remaining Work rollup issue.
Based on the premises that we are ok on having software-specific tags, should we have tags for Visual Studio Team System (VSTS) and Team Foundation Server (TFS)?
I don't have much experience with either of them, but I understand they're slightly different tools, which would support the idea of specific tags.
OTOH, there isn't much questions around for VSTS / TFS in our community, so having different tags could be overkill... but then, how this common tag would be called? Microsoft Team Tools? It could cause further confusion with MS Project (which is pretty consolidated).