I left before the system got much use, so grain of salt and all that. It was a Rails shop so deployment would have been by a migration. Not sure what you mean b

I left before the system got much use, so grain of salt and all that. It was a Rails shop so deployment would have been by a migration. Not sure what you mean by version control. The source was in git. Had we refactored significantly we would have had to write a migration. But the system was in the end quite simple. I refer to it as "BPM" but real BPMN is a bloated monstrosity -- I just captured the essence, and that was dead simple. One fun thing I did not mention was implementing "funcall" in pgsql. That meant that edge cases could be covered by writing a custom pgsql function that would do exactly what was needed. That meant the rest of BPM could stay simple.