AWS CloudFormation vs Google Cloud Terraform Policy Validation

AWS CloudFormation models, provisions, and manages related AWS and third-party resources as infrastructure as code. YAML or JSON templates define AWS resources and their properties. StackSets deploy a common set of resources across multiple AWS accounts and Regions; Change Sets preview proposed stack updates, including possible deletion or replacement, and Drift Detection tracks changes made outside the service. For authoring, AWS CDK supports TypeScript, Python, Java, and .NET, while AWS SAM offers shorthand YAML for serverless resources that is converted during deployment. The CloudFormation Registry supports third-party resources and modules, and stacks can be updated from remote Git repositories. The service is available through API, Linux, macOS, web, and Windows, and manages state. CloudFormation itself has a free plan, with no additional charge for AWS and Alexa resource providers, but created AWS resources are billed at their standard rates. Third-party provider and custom hook operations may also incur charges. Access can be managed with IAM, and CloudTrail logs API calls.

Google Cloud Terraform Policy Validation checks Terraform plans against organizational security and governance constraints before infrastructure changes are applied. The `gcloud beta terraform vet` command evaluates Terraform plan JSON, retrieving project data through Google Cloud APIs. It can flag violations, issue warnings, or halt a deployment before production; it returns exit code 0 when no violations are found and 2 when they are. Platform teams can place validation between plan and apply in CI/CD workflows using Cloud Build, Jenkins, or GitHub Actions. The command accepts Terraform 0.12 or later plan JSON and requires a policy library and the Google Cloud CLI `terraform-tools` component. Policies can cover supported resources from Terraform's google and google-beta providers, and constraints can be reused with other tools that support the framework. The command is free and client-side. The feature is in Preview under Pre-GA terms, where support may be limited. Security Command Center IaC validation has separate requirements: Premium or Enterprise activation at the organization level and a specified role. That workflow also requires Terraform Google provider version 5.5 or later.