system
A chat on subreddit /r/wallstreetbets
human
I work for a very large University in USA. 60k students and over 10k employees. So we have things like classes, seminars and other things to consider.

We have licenses for Teams, Cisco WebEx, Zoom &amp; Google. Everyone uses Zoom even with collaborating with other universities. 

International collaboration is almost always on Teams though.
gpt
Interesting. I have zero exposure to academia, so it's nice to hear that side to it, appreciate it. Business world it's almost completely dominated by Teams these days, in my industry.