License management is a core competence for Microsoft 365 tenant administrators. This article explains how to use PowerShell to remove licenses from accounts when an equivalent service plan is available from another license. It’s the kind of fix-up operation that tenant administrators need to do on an ongoing basis.
Microsoft announced support for concurrent Exchange Online license assignments, aka license stacking. This means that the workload can sort out the capabilities made available to a user through multiple licenses and make the maximum functionality available to the user through whatever’s deemed to be the “most superior” license. If that sounds like so much mumbo-jumbo, it might just be, unless you’ve been plagued by people losing access to their mailboxes because of shifting license assignments in the past. If you have, this change will make you very happy.