Hi, in this mini series I’m adding an overview of the exam content for the terraform associate 004 exam found here: https://developer.hashicorp.com/terraform/tutorials/certification-004/associate-review-004. Hope this helps you on your quest to pass the exam 🙂 look for more sections (1-8) under Terraform in the navigation bar.
Section 1 — Infrastructure as Code (IaC) with Terraform
1a — What is IaC?
IaC means defining your infrastructure (servers, databases, networks) in code files rather than clicking around in a cloud console manually. Terraform reads those files and makes your infrastructure match what you described.
Key point: the code is the source of truth, not what’s manually configured in AWS or Azure.
1b — Advantages of IaC
Know these cold — they come up in questions:
- Reproducible — same config deployed the same way every time, no snowflake servers
- Version controlled — infrastructure changes tracked in Git like any code
- Automation — no manual clicking, less human error
- Collaboration — teams can review infra changes via pull requests
- Self-documenting — the code describes exactly what exists
1c — How Terraform handles multi-cloud and hybrid
This is Terraform’s big differentiator. One tool, one workflow, any cloud. AWS, Azure, GCP, on-premise — Terraform talks to all of them through providers. You write config the same way regardless of where it’s deployed. This is what “service-agnostic” means.