Infrastructure as code: build a system another team can operate
Infrastructure as code makes infrastructure definitions reviewable and repeatable. Its value is strongest when the repository, the running environment and the recovery procedure can be compared. A repository alone does not prove that a service can be restored or that every change was authorized.
Define the operating model
Provisioning and configuration tools describe resources and the software that runs on them. Version control records proposed changes; review records who approved them; deployment evidence records what was applied. Keep those records linked so an operator can trace a release to the running system.
Account for drift and state
Manual changes, provider behavior and partial failures can leave the environment different from its definition. Run plans and drift checks, protect state and restrict concurrent changes. Review proposed replacements and deletions before applying them. Terraform's plan documentation explains the difference between planning infrastructure changes and refreshing state.
Design recovery separately
Recreating resources does not restore application data, keys or external dependencies. A recovery plan needs backups, access recovery, compatible versions and a tested sequence. Reverting a commit changes the desired configuration; it does not automatically reverse a database migration or restore deleted data.
Make a handover observable
- Give the receiving team the definitions, dependency pins and documented configuration boundaries.
- Record where state and secrets are managed, with access granted through the approved process.
- Demonstrate an ordinary change, a failed deployment and recovery from a representative backup.
- Document the remaining manual steps and the person responsible for each.
Start with one bounded environment
Choose a service with clear dependencies and success criteria. Establish state management, review and verification before expanding. Existing resources can be brought under management gradually, with each import checked against the running configuration.
Our private infrastructure and DevSecOps work combines these practices with Keystone and Anvil. The deliverable is an environment the client's operators can understand, change and recover against an agreed scope.