I use edge for MS Teams, office 365 and anything that use microsoft ssO on my linux works computer. I don't want to taint my firefox profile/experience with microsoft stuff, and I figured the microsoft stuff will be better tested on edge than anything else, especially teams videocalls. Since my company mandate the use of microsoft stuff I decided to put everything behind Azure SSO with Edge for linux and keep everything else on firefox.

The only thing I use behind Azure SSO that is not on edge is AWS because I take advantage of the multi containers extension to run several profiles in parallel. But for that I use another browser, librewolf.