Summary
In this chapter, we introduced the concept of layering. We learned in detail the directory structure and the content of each layer type. In addition, we saw how to add an external layer on our project manually or by using the Hob configuration.
In the next chapter, we will learn more about why we need to create new layers and what is the common metadata included in them (such as machine definition files, recipes, and images), and wrap it all up with an example of distribution customization.
