infra-terraform-infrastructure-as-code

To create a reviewable Terraform plan, generate a plan file using the `terraform plan -out=tfplan` command, inspect the human-readable output, and require explicit approval before applying. This workflow flags destructive changes and escalates production risks.

Committing the `.terraform.lock.hcl` file ensures reproducible provider selection across your infrastructure as code workflow. It pins provider versions defined in `required_providers`, preventing unexpected behavior from automatic provider upgrades during routine plan execution.

The best way to configure remote state is using a backend with locking, such as S3 with DynamoDB, Terraform Cloud, or Azure Storage. This discipline prevents state corruption during concurrent modifications and documents migration procedures.

Use reusable Terraform modules when multiple environments share identical infrastructure components, and use environment roots or overlays when configurations require environment-specific variations. This guidance includes establishing clear naming conventions and output contracts.

Yes, Terraform validation requires running `terraform fmt`, `init`, and `validate` before applying changes. These commands ensure proper formatting, initialize required providers, and validate infrastructure configurations against syntax and type requirements.