The Amazon EC2 endpoint for China (Beijing) and China (Ningxia)

Allowed values: cn-north-1 (default), cn-northwest-1

The Amazon EC2 multi-region endpoint

Allowed values: us-east-1 (default), us-east-2, us-west-1, us-west-2, us-gov-west-1, us-gov-east-1, ca-central-1, eu-north-1, eu-west-1, eu-west-2, eu-west-3, eu-central-1, ap-northeast-1, ap-northeast-2, ap-northeast-3, ap-southeast-1, ap-southeast-2, ap-south-1, sa-east-1