Term Kind Topic What it is
Drift Reconciliation Post-Incident Codification, Managed Divergence practice Infrastructure as Code Treating divergence between declared and actual infrastructure as an expected condition with an owned resolution path, rather than as a violation to be automatically reverted.
Infrastructure as Code in Practice IaC practice Infrastructure as Code Defining infrastructure declaratively in version-controlled code so environments are reproducible, reviewable and auditable.
Terraform State IaC State File concept Infrastructure as Code The file mapping declared resources to real infrastructure, without which the tool cannot tell what it already created — and which becomes critical infrastructure in its own right.