Configures Checkov for IaC security scanning across Terraform, CloudFormation, Kubernetes, Helm, ARM, Serverless, AWS CDK - `pip install checkov`, custom Python checks, SARIF / JUnit output, and `--baseline` gating so CI fails only on new findings in legacy code. Use for the broadest built-in rule set with Python custom checks; for Terraform-only scanning use tfsec-policy, for wider platform breadth (OpenAPI / Pulumi / Crossplane) use kics-policy, and for a consolidated new-project scanner use trivy-config.