Our account rep recommended that we change regions from westus1 to westus2 because westus1 was legacy and that's why we were experiencing so many edge cases and bugs (lots of them). That was a year ago.
Today we can't deploy any new postgres servers in westUS2 region because they claim capacity issues, but will let you deploy vms that use the same instance type. If we had to recreate a server we can't even do that! (Azure support will have us recreate instances if there's a problem)
They tell us to use a new region and have no ETA on when they will have more "capacity". Their answer is to force us into a new region and pay out of our pocket for region bandwidth charges between them.
The only reason we are even trying to create another postgres server is because they are deprecating their original postgres service for a new one (with no clear migration path that actually works).
This is just my rant for the week about Azure as a platform, I have many gripes about how they handle things as a whole, not to mention the circular support that ends in us dealing around problems.