Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
In all fairness, your admins absolutely should have been aware. It wasn't "snuck in," it was very clearly spelled out in the release notes (I'm an admin and I get these notices). As an Enterprise client, we were able to easily disable these features entirely. They make it so difficult for consumers to do it.
Tell your admins to READ THE RELEASE NOTES - even if it seems like a little nothing update, READ THE NOTES. The number of times I've had to send something to Network Security because of an innocuous "update" is countless. Microsoft tries to sneak things through all the time.
*Edited for spelling