Global dependencies. Something in DNS had a dependency on something central within Azure, and when that breaks, you're done for. I'm not in the cloud provider

Global dependencies. Something in DNS had a dependency on something central within Azure, and when that breaks, you're done for. I'm not in the cloud provider game, but it seems like it would be important to audit and ensure that there are no critical cross-region dependencies. I assume GCP and AWS do this regularly? It seems like there are some things that have to be somewhat global (IAM comes to mind), but minimization of that seems important. IMO this is the most embarrassing non-security thing that can happen to you as a cloud provider.