Absent a strong business reason otherwise, absolutely.

Azure: yes, all the major cloud providers should migrate all of their use to their cloud. If their cloud doesn't support something that's a problem for their users and they need to fix it ASAP.

O365: Same thing.

VSCode: Developer tools such as IDEs shouldn't be mandated (and weren't when I worked at MS) but if one is mandated it absolutely should be their version unless there's a strong technical reason otherwise (for instance, if they were using Java there are better choices).

Windows: Again, most good shops don't mandate what your desktop environment is

Besides O365 the rest are not even the same thing. If half your company is on Teams, and half is on Slack, they can’t communicate with each other.

Mandating a single communication platform is absolutely the right move. And the fact that MS picked Teams as that single communication platform is beyond obvious. What else could they have chosen?

> Mandating a single communication platform is absolutely the right move

Is it, even if there will be productivity losses? Is making your teams less productive "absolutely the right move"?

If mandating the use of their own productivity tools causes them productivity losses, I'm happy to watch MS either come to terms with that and try to fix Teams or suffer the same losses that they inflict on the rest of the world.

From an outsider's perspective of MS and Github, I think it's the right move.

Yes!