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
Simple answer - No. Not till they make it available in CFN. As of 1-2 days ago, the EngineMode and ScalingConfiguration property are not yet available in the RDS API, as my API call threw this error. First they will make available the APIs/cli. Once that works, create a CFN Custom Resource to invoke the RDS API from a lambda. It might be a while before it is made directly available in CFN.
2018-08-15T16:12:09.648Z f57erb2b-g3a5-11e8-8f64-81912181e535 { MultipleValidationErrors: There were 2 validation errors: * UnexpectedParameter: Unexpected key 'EngineMode' found in params * UnexpectedParameter: Unexpected key 'ScalingConfiguration' found in params
And I know role/permission is not a problem as I could launch normal Aurora cluster from the same.
PS: RDS APIs now work for serverless
Edit: Some time in Oct 18, EngineMode added to CFN, so now this is possible -> https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-rds-dbcluster.html#cfn-rds-dbcluster-enginemode