Use lazy loading to reduce initial load time and improve performance. Lazy loading is a technique that allows you to load only the necessary parts of your application when they are needed. This means that the initial load time of your application is reduced, as only the essential parts are loaded. The rest of the application is loaded on demand, as the user navigates through the application. This can significantly improve the performance of your application, especially on slower networks or devices.

To implement lazy loading in Angular, you can use the loadChildren property in your routing configuration. This property allows you to specify a module that should be loaded lazily when a specific route is accessed. For example, if you have a module called "AdminModule" that should only be loaded when the user navigates to the "/admin" route, you can define the route like this:

const routes: Routes = [
  { path: 'admin', loadChildren: () => import('./admin/admin.module').then(m => m.AdminModule) }
];

In this example, the AdminModule will only be loaded when the user navigates to the "/admin" route. The import statement is used to load the module on demand, and the then() method is used to return the module once it has been loaded. This ensures that the module is only loaded when it is needed, and not during the initial load of the application.