Beats WebEx. I contracted at Cisco after they had bought WebEx and the dev teams had to stagger their scrums in the morning because WebEx infra couldn't support all the meetings at once.
Actually we just finished our switch from Skype to Teams and honestly, as much as I love having GIFs to express my disdain for work, at least Skype could group chats, didn't require all the RAM in the world, and automatically saved chats which, in a records management hellscape was an absolute lifesaver. Also my headphones would automatically answer a call when I put them on my head but I have a feeling that has more to do with the settings than anything else.
Also I'm tired of having to tell people "no we can't do that because Microsoft hasn't integrated that very valuable and highly requested feature you're asking for"