Full Infrastructure-as-Code Migration Using Terraform for a Media Streaming Platform

Key Results

  • 95% Less Provisioning Time
  • Zero Config Drift
  • 100% IaC Coverage
  • 30 min Environment Spin-Up

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Project Background

A media streaming company serving 2 million subscribers had grown its AWS footprint organically over three years entirely through the console. Every environment — dev, staging, production — was configured differently, secrets were embedded in EC2 user data scripts, and onboarding a new cloud engineer took three weeks just to document what existed.

The Challenge

We were engaged to discover, document, and systematically migrate the entire AWS estate — spanning 6 AWS accounts, 200+ resources, and 4 regions — into Terraform without disrupting a platform that streams live content 24/7. The client also needed a CI/CD pipeline for infrastructure changes so no engineer could ever apply Terraform directly from a laptop again.

What We Delivered

  • Ran a full AWS inventory using Terraformer and custom Python tooling to generate baseline Terraform state across all accounts
  • Designed a modular Terraform library covering VPC, ECS, RDS, CloudFront, WAF, Route 53, and S3 with sensible defaults and per-environment overrides
  • Introduced Terraform Cloud workspaces with remote state, SSO-controlled access, and Sentinel policy enforcement for cost guardrails
  • Built a GitOps flow: pull request triggers a terraform plan posted as a PR comment; merge triggers terraform apply via a locked workspace
  • Migrated all 200+ resources into state with zero downtime using targeted imports and carefully sequenced apply runs
  • Documented every module with README, input/output tables, and example usage so the in-house team could extend it independently

Technical Stack

IaC: Terraform 1.7 + Terraform Cloud · Policy: Sentinel · Discovery: Terraformer · CI/CD: GitHub Actions · Secrets: AWS Secrets Manager · Accounts: AWS Organizations + Control Tower

Outcomes

Provisioning a new environment dropped from a three-day manual process to a 30-minute automated run. Configuration drift incidents fell to zero in the six months post-migration. The team now ships infrastructure changes through pull requests with the same rigour as application code, and new engineers are productive in the cloud environment within two days of joining.