[throwaway936x]

My workplace ( < 100 employees) we use Word, Excel, Outlook and Teams (+ Slack).

I think Outlook is much better than Gmail and the built in Apple mail program, and will always choose it if it is available. I actually use Apple Mail on my personal computer as I don't need the advanced filtering + calendar solutions that Outlook provide.

We use Slack for chat, but Teams for video calls. We have tried alternatives to Teams for video, but they are either too expensive or not good enough. Teams is also included in our 365 package, and non-technical employees get tired of testing alternatives as long as Teams "works".

I agree that Teams is much worse than Slack for chats, which is why the company has standardised on Slack for chat.