Well, it has certainly been a long chapter, but we got to learn a lot and I hope that it helps you in your quest towards mastering AWS! Let's quickly recap what we have learned so far.

We started off with a quick introduction to Systems Manager, followed by an in-depth look at how to install, configure and verify the SSM agents on your managed EC2 instances. We then gained an understanding of how to leverage the Run Command to perform certain types of executions on your managed instances, followed by a rundown of maintaining an instance's state configuration using State Manager. We also looked at working with automation documents and how you can effectively patch your instances using them. Towards the end of the chapter, we learned about patching your instances using Patch Manager and also learned how you can effectively inventorize your instance metadata using inventory manager.

In the next chapter, we will be introducing two new services, which will help us to deploy our simple WordPress application to the cloud. So, stay tuned!