Usage: ○ In the Program class, we create a builder (MargheritaPizzaBuilder)?

Short answer: And pass it to a PizzaDirector. The director uses the builder to construct a Margherita pizza and then prints the result. class Program { static void Main() { IPizzaBuilder builder = new MargheritaPizzaBuilder(); PizzaDirector director = new PizzaDirector(builder); Pizza pizza = director.ConstructMargheritaPizza(); Console.WriteLine(pizza); } } And pass it… to a PizzaDirector. The director uses the builder to…

Explain a bit more

construct a Margherita pizza and then prints the result. class Program { static void Main() { IPizzaBuilder builder = new MargheritaPizzaBuilder(); PizzaDirector director = new PizzaDirector(builder); Pizza pizza = director.ConstructMargheritaPizza(); Console.WriteLine(pizza); } }

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.