Instance type support in availability zones in the same region

Its not necessary the instance type would be available in all AZ's. You might run into error like "Your requested instance type is not supported in your requested Availability Zone" in that case

--Syd

You can determine which instance types are available in a specific availability zone by doing this:

aws ec2 describe-instance-type-offerings --location-type "availability-zone" --filters Name=location,Values=<AZ name> --region <region name>

For example:

aws ec2 describe-instance-type-offerings --location-type "availability-zone" --filters Name=location,Values=us-east-1b --region us-east-1