What is the difference between orchestration and choreography in microservices communication? माइक्रोसर्विसेज़ कम्युनिकेशन में ऑर्केस्ट्रेशन और कोरियोग्राफी में क्या अंतर है?

Choreography is a decentralized communication style where each service publishes events about what happened, and other services subscribe and react independently, with no single service directing the overall flow — similar to dancers each following their own cues. It scales well and keeps services loosely coupled, but the overall business process becomes harder to see and debug since it's implicit across many services.

Orchestration is centralized: a dedicated orchestrator service explicitly calls each participating service in sequence and manages the overall workflow state, similar to a conductor directing an orchestra. This makes the process easy to understand, monitor, and modify in one place, at the cost of introducing a central component that can become a bottleneck or single point of coordination failure if not designed carefully.

// Choreography: services react to events, no central control
// Orchestration: a central saga orchestrator calls each service explicitly
orderSagaOrchestrator.reserveInventory(orderId);
orderSagaOrchestrator.processPayment(orderId);
orderSagaOrchestrator.confirmShipping(orderId);