In March 2023, it was publicly announced that there is a new Teams windows app that is now in Public Preview. One of the main objectives of this complete re-architecture of the Teams app is to improve speed and performance. The existing Teams app has had many performance issues, which I have seen day-to-day.
Another big change is the new Teams app will allow users to simultaneously sign into multiple tenants at the same time. This has been a critical ask for customers who have Office 365 tenants implemented in different clouds so they can meet their complex organizational data management requirements.
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