team collaboration and videoconferencing application developed by Microsoft
Factsheet
Videos
Using Microsoft Teams Desktop app with Office 365 E1 license
Microsoft Teams progressive web app now available on Linux
Does anyone use Microsoft Teams?
Teams has more functionality than Skype does, so that's great. But, it has downsides. First, you can't have multiple windows open. So if you're in a meeting, you can't just alt tab to a chat window to ping someone with a question. You can still switch back and forth between different functions in Teams, but it's all in a single pane of glass. Second, it can be hard (at least for me) to remember to look at the various Groups you're a member of (they show up in Teams) since there's no indication when new posts are made. Other than by going into the Groups section and looking.
Also, if you hit the X, it minimizes to the system tray, which is great. But if you're in a call or meeting, it disconnects you from the meeting/call, which in my opinion is stupid.
More on reddit.com