Routing, Navigation, Lazy Loading, Guards, and Application Layouts
Build multi-page application behavior inside a single Angular app with structured routes, protected areas, and efficient feature loading.
Inside this chapter
- Why Routing Matters
- Basic Route Configuration
- Router Outlet and Navigation
- Lazy Loading and Guards
- Enterprise Layout Example
Series navigation
Study the chapters in order for the clearest path from Angular fundamentals to advanced architecture, testing, performance, and deployment. Use the navigation at the bottom to move smoothly across the full tutorial series.
Why Routing Matters
Routing lets Angular applications map URLs to views. This makes web apps bookmarkable, navigable, shareable, and easier to organize. Without routing, large applications feel like disconnected dynamic fragments instead of coherent products.
Basic Route Configuration
const routes = [
{ path: '', component: DashboardComponent },
{ path: 'courses', component: CourseListComponent },
{ path: 'courses/:id', component: CourseDetailComponent }
];Routes describe which component should render for a given URL. Parameterized routes allow pages such as /courses/42.
Router Outlet and Navigation
<a routerLink="/courses">Courses</a>
<router-outlet></router-outlet>The router outlet acts as a placeholder where matched routed components render. Navigation can be declarative through routerLink or imperative in component code.
Lazy Loading and Guards
Lazy loading reduces initial bundle size by loading feature areas only when users navigate there. Guards help control access, prevent accidental navigation away from unsaved forms, or enforce authentication and role checks.
Enterprise Layout Example
A business app may use one layout for authenticated areas, one for public pages, and one for admin-only modules. Routing structure often reflects the overall information architecture of the product.