Separate Routes by Files

If you have a set of routes related to a certain "section", you may separate them in a special routes/XXXXX.php file, and just include it in routes/web.php

Example with routes/auth.php in Laravel Breeze by Taylor Otwell himself:

1Route::get('/', function () {
2    return view('welcome');
3});
4 
5Route::get('/dashboard', function () {
6    return view('dashboard');
7})->middleware(['auth'])->name('dashboard');
8 
9require __DIR__.'/auth.php';

Then, in routes/auth.php:

 1use App\Http\Controllers\Auth\AuthenticatedSessionController;
 2use App\Http\Controllers\Auth\RegisteredUserController;
 3// ... more controllers
 4 
 5use Illuminate\Support\Facades\Route;
 6 
 7Route::get('/register', [RegisteredUserController::class, 'create'])
 8                ->middleware('guest')
 9                ->name('register');
10 
11Route::post('/register', [RegisteredUserController::class, 'store'])
12                ->middleware('guest');
13 
14// ... A dozen more routes

But you should use this include() only when that separate route file has the same settings for prefix/middlewares, otherwise it's better to group them in app/Providers/RouteServiceProvider:

 1public function boot()
 2{
 3    $this->configureRateLimiting();
 4 
 5    $this->routes(function () {
 6        Route::prefix('api')
 7            ->middleware('api')
 8            ->namespace($this->namespace)
 9            ->group(base_path('routes/api.php'));
10 
11        Route::middleware('web')
12            ->namespace($this->namespace)
13            ->group(base_path('routes/web.php'));
14 
15        // ... Your routes file listed next here
16    });
17}