Many Office 365 applications (Teams, Groups, Planner, SharePoint, etc.) now support external guest access. you might end up with a lot of guests, and like any good accommodation, some management is needed. In this article, we look at how to manage the guests created by Office 365.
A new premium Azure Active Directory feature allows you to force group owners to certify that external members should have continued access. Given that Office 365 Groups and Microsoft Teams now both support guest users, it is wise to check on who can access what from time to time. Whether you will want to pay extra for such a feature is quite another matter!