In Message Center message MC247825, Microsoft announced that they will be pushing a banner (advert, in my opinion) in the Teams mobile app activity feed saying that users can add a personal account to the Teams app on their mobile device. These banners will begin at end of April will roll out to all customers by the end of December.
Teams is off the charts in terms of enterprise use, but Microsoft seems keen to push it harder in the personal/consumer space. Enough to potentially ruffle some feathers with enterprises by pushing promotion for using Teams for personal in the mobile client.
If your organisation has previously disabled the ability to add additional accounts to Teams, users will not see the banner.
If you have not disabled additional accounts/personal accounts, but don’t want the banner to be pushed to your users, you can raise a ticket with Microsoft support, via the Office 365 admin portal (Microsoft 365 admin center) and ask for your tenant to be excluded from the banners. This will not limit your user’s ability to add a personal, work or school account to the Teams app, just suppress the banner.
It will be interesting to see where the line is drawn here in terms of Microsoft promoting services directly to end-users of paying organisations. Will we start seeing promotions for Xbox in PowerPoint?
Tony Redmond has already done a good write up on this issue too here: Microsoft to Push Ads for Teams Personal to Corporate Users – Office 365 for IT Pros (office365itpros.com)