As you probably know by now, monitoring and measuring everything is an important aspect of a DevOps-driven organization. You will find on the internet a number of well-written blog posts and examples on how to monitor CloudFormation and Ansible efficiently. When working on monitoring CloudFormation, you will want to subscribe to an SNS topic for your stack creation to receive all the events relating to your stack life cycle. It is important to look out for any CloudFormation stack creation failure. Ansible has a system of callback that will also give you a way to create some automation around the Ansible execution. Similarly to CloudFormation, getting notifications when Ansible fails to run to is important (it's even more important when Ansible is configured to run in pull mode) as your Ansible configuration won't reflect reality.