You say that but majority of people ask using the office-365 tag, and those are answered fairly regularly. Yet exchangeonline has one 20 questions, and actually I've just noticed exchange-online was merged into office-365 tag at some point historically. Also the description for the tag includes server side components.

@yagmoth555 I'm not sure in that instance Microsoft Office would be the wrong tag. I think I'm maybe looking at it from an answer/question pov. If I want to find something about my exchange online subscription would a q tagged o365 lead me to the wrong answer. The other angle is then, is it right to tag questions with both tags?

But the exchange part is the same is it not?

I've never seen that option anywhere, but that's good to know for the future