How to implement PaC for a more secure SDLC

This article explains Policy-as-Code (PaC) as a practice for expressing organizational security, compliance, and operational rules as machine-readable, version-controlled code integrated into development pipelines to enforce guardrails early in the SDLC. It covers PaC's benefits (consistency, shift-left testing, auditability), common tool choices (OPA/Rego, Kyverno, Sentinel, Checkov), practical challenges (Rego learning curve, integration overhead), recommended use cases (DevOps, IaC, pipeline enforcement), and implementation advice (start with high-value policies, version control, testing, and cross-team collaboration).