Centralized Control: ○ The mediator controls the communication between all the colleagues, which makes it easier to modify or extend how messages are passed. For example,

Short answer: dding new features like message filtering or logging can be done in the mediator without affecting the users.

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.