> Copenhagen and Aarhus, which previously announced plans to abandon Microsoft software, citing financial concerns, market dominance and political tensions with Washington.
That's not going to happen, their infrastructure is completely tied to Microsoft Active Directory, it's going to be incredibly expensive to just plan a migration out of that. Trump will be out of office before anything serious can even get startet, and depending on the next US administration, someone will decide that it's not worth the spending.
Plus you'd need to re-train and army of Windows administrators to run, what... Linux and OpenLDAP?
Far crazier things have happened on this planet than switching to Linux and retraining some IT folk.
I don’t think the IT admins are the concern TBH. How about the thousands of people who need to use new software - people who some barely know how to turn the computer on and off?
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Trump represents the average American. That part is not changing and that problem is not going away. Joe Average said "Yes! [current mess] is what I want."
If you can do a successful switch to cloud only Entra (aka. AzureAD) first, you are 90% ready for a migration to Open Source. You need Entra for Licensing anyway. Yes, I'm aware that this is hard.
Univention Nubus (Keycloak + OpenLDAP) or FreeIPA as alternatives for Entra come to mind. You can even leverage your Powershell expertise.