@scottalanmiller - I can't seem to find how I would implement the Azure AD outside-in approach. I see tons of stuff on how I have already installed AADConnect and sync out.
You just... use it. There's nothing to know. Shut down AD, use Azure AD.
I think he's saying that his on-prem network would then need access to his Azure AD for user/computer authentication.
Well the users just authenticate to it. But since Azure AD comes with your hosted email, it's weird to want old on prem email to authenticate to it, too.
I will be ditching my Exchange 2010 but was wondering how it would be affected by it. So what about about the rest of the on-prem servers that are all AD domain members?
That'll be case by case. What's an example workload?
Filemaker Server, ShoreTel Server, an ERP server, File and Print servers, RDGateway/Terminal Server, vCenter, Spiceworks, PRTG, Veeam