This lesson focuses on Orchestrating Promotion, Rollback, and Evidence in CI/CD and its role in the wider building an end-to-end delivery chain where Terraform provisions infrastructure, Ansible configures systems, and CI/CD pipelines promote controlled changes workflow.
Learners work with the actual design choices, dependencies, controls, and failure modes that distinguish this topic from a generic Terraform exercise.
Run a gated pipeline from pull request through infrastructure apply and Ansible verification.
Add a failed-deployment path that stops promotion and produces actionable evidence.
Pipeline results are traceable to a commit, environment, plan, configuration run, and approval decision.
Recover from partial apply, failed configuration, expired secrets, and inconsistent pipeline artifacts.
Learners isolate the smallest verified cause, correct it, rerun the relevant validation step, and record the preventive action in the course improvement log.