#19423 added the aws_partition config into aws module. But this is still limited the region to cn-north-1 or us-gov-east-1 or default to us-east-1.

#16263 added endpoint config. Both region name and endpoint are used in EnrichAWSConfigWithEndpoint function, which enables endpoint resolver for AWS service clients.

We need to spend some time revisiting these two config options for private regions use case and better document these two config options.