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DevOps & Automation · Foundational

AWS CloudFormation

AWS's native infrastructure as code service that provisions resources from JSON or YAML templates as stacks.

Definition

Templates contain Parameters, Mappings, Conditions, Resources (required), and Outputs, with intrinsic functions like Ref, Fn::GetAtt, and Fn::Sub. CloudFormation handles ordering, rollback on failure, and drift detection.

Example

aws cloudformation deploy --template-file vpc.yaml --stack-name prod-vpc

Exam tip

Resources is the only required template section; failed creates roll back by default.

Related terms