This lesson focuses on Understanding State, Change, Import, and Lifecycle and its role in the wider learning Terraform fundamentals through HCL, providers, resources, state, variables, outputs, modules, planning, and safe infrastructure change workflow.
Learners work with the actual design choices, dependencies, controls, and failure modes that distinguish this topic from a generic Terraform exercise.
Change a resource, inspect the state, and explain in-place update versus replacement.
Import an existing object into a controlled address and verify the next plan.
State matches configuration and the plan contains no unexplained create, replace, or destroy action.
Repair address mistakes, unmanaged drift, orphaned state, and accidental replacement.
Learners isolate the smallest verified cause, correct it, rerun the relevant validation step, and record the preventive action in the course improvement log.