What is the difference between orchestration and choreography?

Orchestration and choreography are two approaches to organizing interactions between microservices or system components.

• Orchestration is centralized process management. There is one component (the orchestrator) that controls and directs the execution of tasks, calling services in the necessary order.

• Choreography is decentralized interaction. Each service independently reacts to events and performs its actions without a central controller.

Example: in orchestration, there is a main controller that sequentially calls services A, B, C. In choreography, service A publishes an event, which service B subscribes to, and in turn, B calls service C, and so on.

The choice of approach depends on system requirements, process complexity, and the need for centralized control.