We ask that you pardon us for not sending an earlier message, as is our customer commitment, regarding our early February rollout. Teams admin center is adding support for viewing the list of teams a user has joined.
This message is associated with Microsoft 365 Roadmap ID: 87969
When this will happen
We began rolling this out in early February and expect to complete the rollout by late February.How this will affect your organization
Admins can open the user detail page of any user by going to the Users > Manage users page and selecting any user from their tenant. In the user detail page that opens, they can select the tab ‘Teams’ to view the list of teams that the user is part of.
What you need to do to prepare
You might want to notify your Teams administrators about this new capability and update your training and documentation as appropriate.