Creating Production-Grade Infrastructure with Terraform

Day 16 of my Terraform journey was less about creating new resources and more about improving how infrastructure is designed. The big lesson was this: Terraform code that works is not automatically production-grade. Production-grade infrastructure should be: modular reliable secure observable maintainable testable For Day 16, I audited my earlier infrastructure against that checklist, refactored it into smaller modules, added better validation and observability, and tested it both manually and with Terratest. GitHub reference: 👉 Github Link The Production-Grade Checklist Here is the practical version of what I used. 1. Structure In practice, this means: no giant main.tf doing everything small modules with one responsibility clear variables and outputs repeated logic centralized with locals 2. Reliability In practice, this means: safer replacements with create_before_destroy proper health checks names that won’t collide designs that support rolling changes 3. Security In practice, this