How do you ensure that microservices remain loosely coupled and independently deployable?

Short answer: Clear APIs: Define well-documented, versioned APIs for communication between services.

Explain a bit more

Event-Driven Architecture: Use events (e.g., Kafka) to communicate between services, avoiding direct API calls. Service Discovery: Implement dynamic service discovery tools (e.g., Consul) to locate and interact with services. Autonomous Data Stores: Avoid shared databases and allow each service to have its own storage solution. CI/CD: Use continuous integration and delivery pipelines to manage independent deployments.

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.