PatMyron
commented
1 year ago (Sorry, buggy notification)
Some AWS accounts have access to more availability zones while newer AWS accounts can be restricted in congested regions like us-west-1, sa-east-1, cn-north-1 (another reason I'd avoid smaller regions)
Unfortunately account-level differences are out of scope. Just broad relative data to help newer cloud users make upfront architectural decisions like region selection and they'll discover nuances themselves :)
This is a nuance which may or may not be helpful. Feel free to close.
With regard to AWS' Availability Zone count in us-west-1, three is the correct documented count. However, AWS only ever lets an account have two availability zones. The third zone is virtually non-existent and similarly unusable.