Preface
Drupal 9 is a powerful web-based content management system (CMS) that can be used to build anything from simple websites to powerful applications. While it is useful out of the box, it is designed with developers in mind.
The purpose of this book is to talk about the most common ways a Drupal website can be extended to provide new functionality. In doing so, the book will cover a number of extension points, but also illustrate many subsystems and APIs that can help you model, structure, and wire your business requirements.
Alongside the obligatory theoretical explanations, it will use a practical, example-based approach in order to break down complex topics and make them easier to understand. So, join me on this journey to discover exactly how powerful Drupal actually is.
