Decoupling of Request Handlers:?

Short answer: The Chain of Responsibility allows handlers to be decoupled from the client code. The client doesn’t need to know which handler will process the request, only that the request will eventually be processed by some handler in the chain.

Real-world example (ShopNest)

Use a GoF pattern in ShopNest only when it removes duplication or makes a change safer—explain the problem it solves in the interview.

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.