I'm launching a product that requires multiple different kinds of workflows (e.g. "Order fulfillment", "Contract Negotiation", etc...). And I'm looking for a product that can help me seamlessly manage the coordination of these workflows amongst my team, 3rd parties, and external customers.

The way I view it: I have some concept of an entity in my system (e.g. "an Order"), and any time one of those entities are created (e.g. "an Order is placed"), then some sequence of actions needs to be choreographed amongst my team, the customer, and 3rd parties. Currently I'm doing this using hacked together code, but it feels very brittle/hacked together.

I'm wondering if there is an "Orchestration system as a service" that can help me solve this. I've looked at things like Airflow, but it still seems too low-level. I'm looking for the equivalent of something like Algolia, Airflow, etc... i.e. a SaaS product. Kissflow seems interesting, but I'm hoping to have multiple options that I can evaluate before deciding.