Explain how the POST method differs from GET.

Short answer: GET → Used to retrieve data, should not modify server state, and can be cached/bookmarked. POST → Used to create new resources or submit data. It modifies server state, is not idempotent, and cannot be cached.

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.