How do design patterns help you follow SOLID principles?

Short answer: Design patterns provide structured, reusable solutions that embody SOLID principles. For example, the Strategy pattern supports OCP by allowing behavior extension without modifying existing code; Repository separates data access (SRP); Dependency Injection supports DIP by decoupling high- and low-level modules. Using patterns helps keep code clean, modular, and maintainable.

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.