Drupal 8 comes with a services based architecture allowing clean dependency injection, separation of concerns and another way to modify how Drupal works without hacking core

You've probably heard that Drupal 8 lets you swap out a core service for your own implementation, hey, I even said it myself here and here, but how do you achieve that?

Read on to find out how to manipulate Drupal 8 services at run-time and how this compares to other popular PHP Frameworks like Laravel, Silex and Symfony