I saw a post from BitTitan emphasizing how Active Directory modernization is key to...

I saw a post from BitTitan emphasizing how Active Directory modernization is key to smooth Microsoft 365 migrations, and it resonates with what I've seen in operations. When you're dealing with legacy AD setups, especially in large environments, the risks pile up fast during tenant migrations. We've handled cases where outdated domain controllers led to identity sync issues that halted progress, forcing teams to backtrack and clean up before moving forward. Managing infrastructure at scale, I know that consolidating domains isn't just about reducing hardware; it's about tightening security and simplifying management. In one project, we cut domain controllers from 350 to 60, which directly improved migration efficiency by minimizing failure points. Tools like Quest On Demand Migration help here, letting us map identities accurately without disrupting operations. But the trade-offs are real: rushing modernization can expose gaps in least-privilege design, while delaying it drags out the migration timeline. We always prioritize assessing AD health first to avoid those pitfalls. What's one AD issue you've hit during an M365 move that caught you off guard?