Performance Improvement:?

Short answer: By avoiding the creation of heavy objects until they're needed, proxies can improve the performance of applications, especially in cases of large datasets or expensive operations (like network calls or file loading).

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.