From Aurora Serverless\'s document, there are 3 ways to create an Aurora serverless DB cluster: AWS management console, CLI, and RDS API. (https://docs.aws.amazon.com/Amazon
It is now possible to create an AWS::RDS::DBCluster with an EngineMode set to serverless. See more here: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-rds-dbcluster.html#cfn-rds-dbcluster-enginemode