Terraform vs Manual Infrastructure

Manually created infrastructure — click-ops — works until someone needs to reproduce it, audit it or change it safely. Infrastructure as code (IaC) with a tool such as Terraform or OpenTofu addresses all three.

The risks of manual infrastructure

• Environments drift apart and no one knows exactly why
• Changes have no review or history
• Recovery after a failure depends on memory
• Knowledge concentrates in a few people

What IaC provides

Infrastructure is defined in version-controlled files, changes are reviewed as plans before they apply, and the same modules can build consistent environments.

Bringing existing infrastructure under code

• Inventory what exists and decide what to manage
• Import resources into state incrementally, starting with the most change-prone
• Introduce reusable modules for common patterns
• Run plans in CI and apply through a controlled pipeline
• Detect drift regularly

Keep state safe

Use remote state with locking, restrict who can apply, and never store secrets in plain text in configuration or state where avoidable.