Summary

This chapter has been an overview of Drupal 9 for developers. We saw what technologies Drupal uses. We took a look at Drupal's architecture. We took a cursory glance at several prominent subsystems of Drupal. We also got a feel for which developer-oriented tools are to be used while working with Drupal.

Starting with the next chapter, we will be working with code. In fact, each of the subsequent chapters will focus on practical aspects of working with Drupal.

In the next chapter, we will create our first Drupal 9 module with the obligatory Hello World example.