Terraform¶

Terraform lets you describe infrastructure — networks, servers, databases, DNS records, Kubernetes clusters — as code, preview exactly what will change, and apply those changes the same way every time. This section takes you from a first project that runs on your laptop with no cloud account to the practices teams use to run Terraform safely in production: remote state, reusable modules, isolated environments, automated tests, and plan-and-apply pipelines.

Start Here, Based on Where You Are¶

The Learning Path¶

flowchart TD
    A[Fundamentals and first project] --> B[Variables, outputs, locals]
    B --> C[State and remote backends]
    C --> D[Modules]
    D --> E[Environments and workspaces]
    E --> F[Testing and CI/CD]
    F --> G[Interview preparation]

Every Page¶

1. Fundamentals and Your First Project — providers, resources, the init/plan/apply loop, the lock file, and a hands-on project with no cloud account needed
2. Variables, Outputs, and Locals — typed inputs with validation, sensitive values, for_each vs. count, data sources, and lifecycle rules
3. State and Remote Backends — what state holds, S3 backends with native locking, drift, import, moved, and removed blocks
4. Modules — module structure, inputs and outputs as a contract, versioning, and composition
5. Environments and Workspaces — directory-per-environment layouts, CLI workspaces, and account isolation
6. Testing and CI/CD — fmt, validate, TFLint, security scanning, terraform test, and a GitHub Actions plan-and-apply pipeline with OIDC
7. Interview Questions — core, scenario, and senior questions with answers

How Terraform Fits With the Rest of This Site¶

Further Reading¶

• Terraform documentation
• Terraform Registry
• OpenTofu documentation — the open-source fork, largely compatible with the concepts on these pages