How can you automate API testing?

Short answer: Use tools like Postman Collections, Newman, RestAssured (Java), Supertest (Node.js), xUnit/NUnit (C#). Integrate tests into CI/CD pipelines (Jenkins, GitHub Actions, Azure DevOps). Automate unit, integration, and load tests. Ensure regression testing after deployments.

Real-world example (ShopNest)

ShopNest exposes REST APIs for cart and checkout. Controllers stay thin; business rules live in application services.

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.