A good example would be Microsoft Groups. When Groups originally rolled out, Microsoft philosophy was that Groups should be a “tool for the people.” They didn’t want administrators getting in the way, so there were no administrator controls at all.

That might be a little more hyperbole than fact, but Groups did roll out without the ability to stop end-users from creating whatever Groups they wanted with whatever names they wanted. I heard complaints from several colleges that had students creating Groups with less than appropriate names.

If your organization is used to enforcing strict controls on how technology is used, Office 365 might be a problem for you. Microsoft’s answer is usually that there are add-on services that give you more advanced controls (EMS, Intune, etc.), but do you want to pay more money to be able to control the technology you’re already paying for? If not, maybe you should reconsider your migration to Office 365.