How do you manage dependencies and interactions between multiple microservices in REST?

Short answer: Use an API Gateway for routing and orchestration. Implement service discovery (Consul, Eureka). Use message queues/event buses (RabbitMQ, Kafka) for async communication. Apply circuit breakers (Polly in .NET) to handle failures. Implement distributed tracing (Jaeger, Zipkin, OpenTelemetry).

Real-world example (ShopNest)

Creating an order is POST /api/orders → 201 with Location header. Fetching is GET /api/orders/{id} → 200 or 404.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.