Summary

In this refresher chapter, we refreshed our memory as to what CloudFormation is, how we create and update stacks, why service roles are important, and how to implement them. We also remembered what drifts in CloudFormation are, when they occur, and how to detect them.

While this is an introductory chapter, we covered the fundamental building blocks of CloudFormation. In the following chapters, we will use service roles and drift detection again, but first, we need to deep dive into the internals of the CloudFormation template, which we are going to do in the next chapter.