API Versioning: Evolving Without Breaking Clients

As APIs grow, changes are inevitable. Versioning keeps existing clients working.

  ## Versioned routes
  
  ```php
  Route::prefix('v1')->group(function () {
    Route::get('/posts', [V1PostController::class, 'index']);
  });
  
  Route::prefix('v2')->group(function () {
    Route::get('/posts', [V2PostController::class, 'index']);
  });
  ```
  
  API versioning enables controlled evolution.
  
  In the next tutorial, we will design a production deployment strategy.