Explore the transformative power of "Policy as Code" in this conference talk on stack security. Delve into the challenges of ensuring software security in today's fast-paced development world. Learn about the importance of integrating an authorization layer directly into your codebase. Examine key security concepts, including the OWASP Top Ten and access control models like ABAC, RBAC, and REBAC. Gain insights into leading policy engines such as OPA, Cedar, and OpenFGA. Discover how to seamlessly embed policies into your workflow to enhance your stack's security. Elevate your security practices and understand why policies are not just a choice, but a mandate in modern application development.