What is RAML, and how does it differ from OpenAPI/Swagger?

Short answer: RAML (RESTful API Modeling Language) → YAML-based specification for APIs. Focuses on design-first API approach. Differences with OpenAPI/Swagger: RAML is more design-oriented; Swagger is implementation-oriented. OpenAPI has better tooling support and community adoption.

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.