Laravel - Middleware - Middleware Groups

Sometimes you may want to group several middleware under a single key to make them easier to assign to routes. You may accomplish this using the $middlewareGroups property of your HTTP kernel.

Out of the box, Laravel comes with web and api middleware groups that contain common middleware you may want to apply to your web and API routes. Remember, these middleware groups are automatically applied by your application's App\Providers\RouteServiceProvider service provider to routes within your corresponding web and api route files:

 * The application's route middleware groups.
 * @var array
protected $middlewareGroups = [
    'web' => [
        // \Illuminate\Session\Middleware\AuthenticateSession::class,

    'api' => [

Middleware groups may be assigned to routes and controller actions using the same syntax as individual middleware. Again, middleware groups make it more convenient to assign many middleware to a route at once:

Route::get('/', function () {

Route::middleware(['web'])->group(function () {
Out of the box, the web and api middleware groups are automatically applied to your application's corresponding routes/web.php and routes/api.php files by the App\Providers\RouteServiceProvider.