I myself have relied on “Activity Alerts” in the Security & Compliance Center and it has worked well. As soon as someone deletes, for example, a Team or a Planner, a notification is sent to a team channel in my Governance Center and then I know that it might be something I should look into. Continue reading “How do you keep track of when an Office 365 group is deleted?”
The answer is (as so often) here too “It depends”
Here are some examples of solutions you can choose based on your needs. (Of course, there are many other solutions “out there” but the tools are usually the same.)
If all users are able to establish new teams then you must get a provisioning solution in place before the roll-out, otherwise I can guarantee that you will get a chaos and lose control in very short time.