What is the FormBuilder service in Angular, and how does it simplify form creation?

Short answer: FormBuilder helps create form controls/groups/arrays with less boilerplate. ✅

Example code

constructor(private fb: FormBuilder) {} this.profileForm = this.fb.group({ firstName: ['', Validators.required], lastName: [''], email: ['', [Validators.required, Validators.email]] });

Real-world example (ShopNest)

A shared CartService is injected into header and product pages so both see the same cart count.

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.