That's not exactly what I was looking for, though. Because every listed approach injects technical complexity in the middle of my business logic.

I.e. if I have two consequent tasks I have to define them as a separate scripts or commands, package them, upload and then orchestrate them in a completely different place.

While in Prefect I have all the niceness of writing almost plain Python (as with new tasks API in Airflow), then I can package and distribute the whole thing in docker image with a single command. It really matters!