Multiple instances for multiple organizations
To help switching between multiple organizations faster
Thomas Brown commented
Mobile app allows a SINGLE personal account and a work account. Web app requires full log-out. This is ridiculous; implement something similar to Google where you can choose quickly between multiple work and/or personal accounts. Microsoft's handling of accounts is and has always been archaic.
Same trouble when you are a Guest to other organization that uses Teams Free - you will have to switch accounts and will lose access to all info in your organizations's Teams.
I need to work across 3 different organisations, and I need to take phone calls across all of them. Switching tenants is not an option, so I need to run 1 native Teams client and 2 additional Edge Chromium profiles logged each to a different tenant