Facade Class (HomeTheaterFacade):?

Short answer: The HomeTheaterFacade class simplifies the process by offering two high-level methods: WatchMovie() and EndMovie(). These methods internally call the relevant methods on the subsystem components (e.g., On() for the amplifier, Play() for the DVD player). The user doesn’t need to deal with the details of how the components interact or manage their state.

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.