Policy-as-Code for Infrastructure-as-a-Service is the practice of defining and enforcing cloud governance rules in code. It replaces manual checks, PDF guidelines, and fragile processes with automated, version-controlled policies. The result is consistent compliance across all environments, every time you deploy.
IaaS Policy-as-Code links infrastructure automation with security and cost control. You write policies in a language your tools understand—often using Open Policy Agent (OPA), HashiCorp Sentinel, or native cloud policy engines. Then you integrate them into provisioning workflows. When an engineer spins up new compute instances, storage, or networking, policies run instantly. If a rule fails—wrong region, unencrypted volume, over-budget resource—the deployment halts before anything goes live.
This approach scales. One set of policy definitions can enforce best practices across AWS, Azure, and Google Cloud. Multi-cloud teams stop reinventing governance for each provider. Source control tracks every policy change, enabling audits and rollbacks. CI/CD pipelines become the enforcement layer, ensuring no drift from security baselines.