Writing infrastructure policy using high-level programming languages, known as Policy as Code, enables the automation and enforcement of best practices, allowing organizations to apply software development methodologies like testing, automated deployment, and version control. Traditional cloud provider GUIs often lack repeatability and versioning, while policies written as code allow for testing against live or ephemeral systems, leading to significant organizational benefits such as cost savings, improved compliance, and efficient deployments. For cost control, policies can be created based on pricing data to limit spending and utilize cloud provider resources to manage unused resources. Compliance is enhanced by enforcing infrastructure policies that prevent unauthorized access and secure the software supply chain. Pulumi’s deployment engine, for instance, allows for policy validation before resource deployment, blocking non-compliant resources and supporting testing at various levels. Policy Packs enable bundling of related policies for organized management, while the integration of cloud-native tools like IAM Access Analyzer with Policy as Code ensures comprehensive management and protection of infrastructure. Ultimately, Policy as Code not only benefits developers and operators but also plays a crucial role in an organization's overall success by automating cost control, ensuring compliance, validating infrastructure, and encoding best practices.