Terraform Patterns for Enterprise Azure Provisioning
DevOps & Automation
Terraform at enterprise scale is a different challenge from a single-team deployment. State management, module design, and pipeline governance are the three areas where enterprise Terraform either succeeds or becomes unmanageable.
Key Patterns & Steps
- Remote state: store in Azure Storage with container-level locking — one state file per environment per workload
- Module structure: platform modules (networking, security) owned by platform team; application modules owned by app teams
- Variable hierarchy: defaults in module → environment tfvars → CI/CD pipeline variables for secrets
- terraform plan as a PR gate: output posted as a PR comment; no merge without a human reviewing the plan diff
- Drift detection: scheduled pipeline runs terraform plan against live infrastructure; alerts on unexpected differences
- Workspace strategy: use workspaces for ephemeral environments (feature branches); use separate state files for long-lived envs
Lessons Learned
The most dangerous Terraform operation is terraform destroy triggered accidentally in a CI/CD pipeline. Add a manual approval gate in your pipeline before any destroy action, and protect your state file backend with RBAC.
Technologies
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