Why Terraform remote state matters and how to configure it: backend comparison, production-ready S3, Azure and GCS examples, migration steps and seven pitfalls.
A practical guide to the Terraform lifecycle: what init, plan, apply and destroy do, and how the lifecycle block (prevent_destroy, ignore_changes, create_before_destroy) protects resources.
Learn how Terraform state locking stops concurrent applies from corrupting state, how each backend implements it, and how to safely handle a stuck lock.
Build a reusable Terraform module from scratch, call it from a root configuration, choose between local, Git and Registry sources, and avoid the design mistakes that make modules hard to maintain.
A practical guide to Terraform module structure: standard file layout, variable and output design, composition, native tests, and seven pitfalls to avoid.
Step-by-step guide to importing existing cloud resources into Terraform state: import blocks, -generate-config-out, the CLI command, ID formats and bulk imports.
What Terraform state is, how plan and apply depend on it, local vs. remote storage, essential terraform state commands, and six state mistakes that cause outages.
