What Is Infrastructure as Code?

Declare, then apply

Infrastructure as Code (IaC) means writing configuration files that describe servers, networks, and related resources. Tools create, update, and destroy those resources to match the files.

Why it helps

• Repeatable environments for learning, staging, and production
• Changes reviewed in pull requests like application code
• Less click-ops drift in cloud consoles
• Destroy and recreate labs safely

Terraform's role

Terraform reads declarative configuration (HCL), plans a change set, then applies it through provider APIs such as AWS, Azure, GCP, or local providers.

Demo-friendly mindset

This course uses tiny local examples and concepts you can practice without a large cloud bill. Always destroy practice resources when finished.

terraform plan
terraform apply
terraform destroy