In this chapter, you learned about writing well-documented, well-formed, and purposeful code. By now, you know what a function is and how to create useful functions. You learned about comments and the help system, as well as digitally signing scripts to prevent unauthorized changes.

You have seen how modules are created and what purposes they serve, and how to get your code into version control. All of these skills will be called upon in the next chapters, when we take a close look at DevOps, DSC, and release pipelines!