AWS's infrastructure-as-code (IaC) service. It defines AWS resources in YAML or JSON templates, and CloudFormation creates, updates, and deletes them in an orchestrated way. Resources are grouped into stacks.
AWS's IaC tool on CLF-C02. SAA-C03 uses it for repeatable deployments. Equivalent to ARM Templates in Azure or Terraform. Question: deploy the same infrastructure across multiple environments consistently → CloudFormation.
AWS CloudFormation is a concept that can show up on the exam. Check the full guide to see it in context.