We know you are patiently waiting for this feature. This feature is being implemented in stages. Fast tenant switching is currently in testing both internally and with early customers. We expect to release to the public in the Fall. I’ll post an update once it’s rolling out.
Full multi-tenant, multi-user support will be added after fast tenant switching.
~AlexKyle Calderwood commented
I know you say that you're investigating this and there's "complicated issues" but if you want to compete with Slack this is a killer. They've had this feature from day one. Maybe instead of switching entirely in/out of accounts add the ability to add teams (from different tenants) under a "master account" similar to how you can open OneNote notebooks from several accounts without signing in/out.Kyle Calderwood supported this idea ·Kyle Calderwood commented
Yes please, I have a school account, training account, and a Microsoft educator account that I need to switch between.