How do you optimize the performance of an Angular application?

 Answer: Performance optimization can be achieved through:

Lazy Loading: Load modules only when needed.

Change Detection Strategy: Use OnPush to reduce checks.

TrackBy in ngFor: Helps Angular track changes in lists.

Using AOT Compilation: Ahead-of-Time compilation reduces the load time.

<div *ngFor="let item of items; trackBy: trackById">{{ item.name }}</div>

trackById(index: number, item: Item): number {

  return item.id; // unique id

}