What is a Controller in Laravel?

A Controller in Laravel handles the HTTP request logic — it sits between routes and models/views. Generate with php artisan make:controller UserController. Controllers live in app/Http/Controllers/. A resource controller (--resource flag) generates seven RESTful methods automatically: index (list all), create (show create form), store (save new), show (show one), edit (show edit form), update (save edits), destroy (delete). Register all seven with one line: Route::resource("users", UserController::class). Controllers can use constructor injection — Laravel's service container automatically resolves dependencies.