This chapter presented to us the basic concepts of packaging, a concept that has a central role for Poky and BitBake, package versioning, and how this impacts Poky's behavior when rebuilding packages and package feeds. It also showed us how to configure an image to be updated using prebuilt packages provided by a remote server.

In the next chapter, we will learn about the BitBake metadata syntax and its operators to append, prepend, and remove content from variables, variable expansions, and so on. We will then be able to understand the language used in the Yocto Project engines better.