IntroductionSkyscanner engineering squads deploy thousands of production changes every day that interact with hundreds of services hosted on AWS. In total, we have over 6,000 CloudFormation stacks across 60 different AWS accounts! To deploy these changes with zero clicks, we have an automated pipeline for building, testing, deploying code, and provisioning new infrastructure — the latter stage often being referred to as Infrastructure as Code (IaC).But where does Security fit in? Our goal in Pla...