In this chapter, we learned the reasons that motivate us to create a new layer and metadata. We saw a description of how to create machine configuration, a distribution definition, and recipes files. We learned how we can create images and how to include our application in an image.
In the next chapter, we will access some examples of the most common customization cases used by an additional layer, such as modifying existing packages, adding extra options to autoconf, applying a new patch, and including a new file to a package. We will see how to configure BusyBox and linux-yocto, two packages commonly customized when making an embedded system.
