The New Security Leader’s IaC Governance Playbook

Infrastructure-as-code governance is presented as a security responsibility because consequential cloud configuration choices, such as access permissions, encryption, network exposure, and logging, are made in Terraform, OpenTofu, CloudFormation, Kubernetes manifests, and related code before deployment. The playbook recommends four continuous pillars: inventorying coded and unmanaged infrastructure while measuring drift and policy coverage; linking Git history, CI/CD records, and cloud logs into a reliable audit trail; introducing targeted policy-as-code checks gradually from warning to enforcement; and conducting recurring reviews of human and machine access, especially privileged CI roles and state-backend credentials. It advises prioritizing issues by potential impact and exploitability, with reusable insecure modules receiving particular urgency, and measuring progress through enforced-policy coverage, drift levels and duration, IaC adoption for changes, pipeline pass rates, and exceptions rather than raw finding totals. Common risks include treating governance as a finite project, deploying broad scanner rule sets or blocking controls too quickly, inadequately protecting Terraform state, lacking an accountable exception process, and failing to collaborate with platform and development teams. The text also describes Spacelift as an orchestration platform offering policy enforcement, drift detection, multi-IaC workflows, access features, and automated infrastructure management.

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