How to use Terraform variables and expressions for reusable configurations: types, validation, tfvars precedence, locals, conditionals, loops and built-in functions with examples.
A step-by-step beginner's guide to writing Terraform code: install the CLI, create main.tf, launch an EC2 instance with init, plan and apply, and make it reusable with variables.
Why teams choose Terraform for infrastructure as code: declarative configs, change previews, multi-cloud providers, reusable modules and state management, explained with real HCL examples.
How Terraform decides the order to create and destroy resources: the dependency graph, implicit attribute references, when depends_on is needed, and how to debug ordering errors.
The complete lifecycle of a Terraform resource: defining it in HCL, reading plan output, applying, updating in place or by replacement, importing and destroying safely.
A beginner-friendly tour of Terraform core concepts and HCL syntax: providers, resources, data sources, variables, outputs, modules and state, each shown with working code.
Learn Terraform module versioning and publishing: semantic versioning rules, ~> constraints, Registry requirements, private registries, CI automation and common mistakes.
