What distinguishes process management in orchestration from methods in choreography in system automation?

Process management in orchestration involves centralized control over task execution and interaction between services. The orchestrator is responsible for the sequence of calls, error handling, and routing logic.

In choreography, each service independently reacts to events and interacts with others through message exchange, without a single control center. This is a distributed approach where coordination is achieved through local reactions to events.

Example:

• Orchestration: a central service calls services A, B, C in sequence and controls the entire process.
• Choreography: service A publishes an event, service B reacts to it and publishes the next event, service C reacts to the event from B, and so on.