Supervision policies in Microsoft 365 are defined as capturing employee communications for examination by designated reviewers (docs.com). In layman's this means policies can be set up for someone to review team members communications who may be disclosing sensitive information or violating HR policy in the use of profanity, racial slurs, taunts or sexually explicit language in Teams channels and private messages.
If you were in Vegas for MS Inspire back in July then I'll wager you probably heard the expression Teams, Teams, Teams! at some point during the conference. Microsoft used it a hell of a lot. Partners did too. And Vendors. Even my colleague Graeme - who I shared a room with over at the Tropicana - proudly proclaimed it Day 1 having returned from the Hub and having - in his words - caned Fifteen K purely on the freshly brewed organic coffee they were serving outside the breakouts. Now, I had absolutely no doubt in my mind that after he'd left for the evening he went on to recreate the pose he did in the room - something I can only record for posterity as bordering on lunging - at some partner event at the Venetian, or the Wynn. I personally wouldn't be surprised if he partook in a bit of photo bombing too.