Mastering Policy as Code: A Practical Guide to Sentinel in Terraform

Imagine you are a DevOps engineer at a rapidly growing fintech startup. Your team has successfully adopted Infrastructure as Code (IaC) using Terraform. Deployment is fast, environments are reproducible, and your HCL (HashiCorp Configuration Language) files are clean. But then, a problem arises: a junior engineer accidentally deploys an AWS S3 bucket without encryption, or someone provisions an oversized, expensive EC2 instance that violates the department's budget.