@mairin Imagine that a large portion of your known universe and toolset has been sucked into a black hole, and shaken a bit. You step into the black hole. It doesn't hurt, but everything is a bit off-place.
There is video, chat, a whiteboard, a calendar, and really way too much stuff. It's pluggable, and you can even install Teams specific apps inside it!
When you come out of the black hole, you'll do so as vestigial radiation, ready for another day.