Hey @marlon89,
I sadly don’t have yet a tutorial or a sample for it. I am looking into creating something like that in the next weeks, with cdk support.
I created an architecture of how this API can look like.

SageMaker-batch-cycle.drawio1522×1602 231 KB

You can basically leverage AWS Lambda with S3 Trigger to start an create you batch transform jobs after a file Is uploaded to a prefix on an s3 bucket.