Resource routes in Laravel let you create many routes with one line. When you write Route::resource('posts', PostController::class), Laravel creates 7 routes for you. These routes handle showing all posts, showing a form to create a post, saving a new post, showing one post, editing a post, updating a post, and deleting a post. Each route uses a specific URL and HTTP method. For example, GET /posts calls the index method to list posts. DELETE /posts/{post} calls the destroy method to delete a post. This automatic mapping helps you write less code and keep your app organized.