Chat federation. I would like Microsoft Teams to replace WhatsApp that is a consumer tool. The app on the phone is a perfect replacement, however we would require federation between Microsoft Teams user groups between different Tenants.
Joshua Wilson commented
Need ability to have group chats with various external company's vs 1:1 chats with external users in the main chat area.
Owen Hathaway commented
External Users and Guest Users go part way toward solving this for us. Unfortunately, these solutions require us to create users in every tenant we need to federate (we have dozens that we manage). The admin overhead is just unworkable.