Been like this for the longest time.<p>Makes sense but a real PITA when using a lot of AWS accounts in an org.<p>In hindsight they should have assigned AZ identifiers to something less sequential.<p>Instead of<p>eu-east-1, eu-east-2, eu-east-3<p>Do something like<p>eu-east-s, eu-east-k, eu-east-p<p>where the suffixes are the same for everyone. Less bias to choosing -1 then.
Yeah. There is an api call that shows the mapping between a region's az names and the static az id's. I wasn't an early adopter but encountered the random az assignment in 2010.