Learn to implement comprehensive security testing for Terraform infrastructure code through this 13-minute conference talk by Neel Shah from HashiCorp. Discover how to build unit tests that identify and prevent security misconfigurations before they reach production environments, moving beyond traditional static analysis and linting approaches. Explore practical implementations using Terratest, InSpec, and custom testing frameworks to validate IAM role configurations, resource settings, encryption policies, and network boundaries. Master techniques for securing your development workflow by creating CI/CD guardrails and developing reusable test suites that scale with your infrastructure growth. Understand the "shift left" security methodology that emphasizes early detection and prevention of security issues in the development lifecycle, ensuring robust security posture from code inception through deployment.