Oh, no. The other extreme wasn’t Step Functions. It was AWS Lambdas stringed together through DynamoDB Streams, SQS, SNS and S3 triggers, all obscurely tied together in a murky single-file yaml template deployed by JAWS (now the serverless framework, which has definitely made some much-appreciated improvements).

But something

- offering a clear visualisation

- and allowing to simply integrate with third-party APIs

- without having to deal with some’s quite obscure documentation

while at the same time

- easy to monitor & debug

- offering versioning

- allowing to just write a few lines instead of going through pointy-clicky drag-and-droppy mess

Yes, that was lacking. Reminds me of Zenaton (https://zenaton.com/). I can only wish you to be more successful than they were.