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Terraform Module Library

A curated Terraform module library that became the default way to provision infrastructure — 8,000+ module usages across 70 repositories.

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Self-service infrastructure only works if the self-service path is the easiest path. This module library made the compliant, production-hardened way to provision AWS infrastructure also the fastest one.

Challenge

Seventy application repositories, each capable of provisioning its own infrastructure. Without a shared library, every team reinvents VPC wiring, database parameter tuning, and IAM boundaries — and every reinvention is a future incident and an audit finding.

Approach

  • Curated modules with hard defaults. Encryption, retention, and monitoring on by default; overriding a safety default requires an explicit, reviewable argument.
  • Versioned like software. Semver releases, pinned versions in callers, upgrade guides per minor — modules are an API, not a snippet.
  • Docs as the adoption surface. Complete examples for every module; a module without a working example does not ship.

Result

8,000+ module usages across 70 repositories. New services inherit production-grade infrastructure configuration from their first commit, and platform review shifts from reading HCL to reviewing intent.