Reorchestration: a reactive orchestration architecture

Orchestration is crucial to address the growing complexity of IT, cloud and telecom services. Orchestrators enable service deployment, but continuous operation is given second-class status. Most orchestrators use static workflows, which may fail, misbehave or be insufficient, leaving services in an undesirable state. We propose the Reorchestration architecture for orchestration without workflows, which marries functional inspired state management with an infrastructure-as-code approach. It enables changes to be applied to existing services, while providing a high-level framework for expressing how these changes should happen. We also share our first prototype, in the hope that it can foster discussions on new software architectures for orchestrators and closed-loop automation.