Conductor

Conductor is the open-source microservices orchestration engine (from Netflix) that manages complex, distributed workflows at massive scale.

This is Netflix Conductor: an Apache 2.0 licensed, cloud-agnostic workflow orchestration platform. It was engineered at Netflix to solve the complexity of coordinating hundreds of microservices for processes like content ingestion and encoding. Developers define resilient, asynchronous workflows using a simple JSON-based DSL, decoupling the business logic from the state management. The engine handles the heavy lifting: task scheduling, automatic retries, error handling, and persistent state. Conductor is proven to scale, supporting millions of concurrent process flows, and provides critical observability via a built-in UI for real-time monitoring and debugging.

https://conductor-oss.org/