I prefer Teams to slack. I haven't used slack in a couple of years, so it may have improved since. For Teams, I like the built in screen sharing and the fact th

I prefer Teams to slack. I haven't used slack in a couple of years, so it may have improved since. For Teams, I like the built in screen sharing and the fact that you can share a window rather than a screen. I use 43" monitors so sharing full screen is impractical for someone viewing on a laptop. The voice / video "Teams meetings" are also pretty handy; we would do remote standup using that. I am also able to turn off audible notifications. I'm probably biased because I've been in Microsoft shops for years.