The question doesn't make an explicit case for the new tag, beyond continuing the line of existing Windows Server version tags. So, this seems like a good time to look at the utility of the whole hierarchy.
The FAQ describes the reasons for tagging questions:
- Tags connect experts with questions they will be able to answer.
- Tags are for sorting your question into specific, well-defined categories.
- They are used for (weak) statistics.
- Tags are used in searching.
- Tags can award badges.
It also says what tags are not for:
- Tags are not for summarizing your question.
- Tags are not for indexing your question.
The most important of the positive reasons is to connect experts with questions they can answer. Now this site isn't for questions about operating systems per se, but I suppose there are times when it is useful to be able to find questions that apply to Windows as opposed to say Linux.
Judging from the number of followers for the existing tags, this is not very common:
The parent tag windows-server has 111 questions (17 this year) with 3 watchers. The top level tag windows has 535 questions (39 this year) with 12 watchers. Only these two tags have an excerpt.
status-completed It seems that the Windows Server version tags are noise (on this site) and should all be made synonyms of windows-server.
One could go further and argue that all Windows OS tags (client and server) should be synonyms of windows.
Like many sites, we have too many largely useless tags here. This is mostly the company's fault for making tag creation too easy and not providing better tag management tools (even to moderators).