Why should you care?

Prop-drilling and random BehaviorSubjects do not scale.

See it live — copy this example

Run examples in an Angular CLI project (ng serve). Prefer standalone components and TypeScript strict mode.

// When You Need a Store
// Store shape: { entities, ids, loading, error }

What happened?

• Start local; introduce a store when many features share the same data.
• Follow the steps below — typing the code yourself is the fastest way to learn.

Practice next

1. Reproduce the snippet in an Angular CLI app.
2. Change one binding or route and re-serve.
3. Note one mistake you almost made.
4. Extract a service.
5. Add a trivial unit test later.

Remember

You can explain When You Need a Store simply. You ran a small Angular demo. You know one pitfall.

When You Need a Store in AngularVerse

Your team applies when you need a store on an admin UI.

Outcome: A concrete next coding step exists.