Module 2: Executing the Build

Planning is over. It's time to Materialize your architecture.

Step 1: The Materialization Command

The command terraform apply takes your code and turns it into reality. It compares your main.tf with what already exists in the cloud and makes whatever changes are necessary.

Mission: Apply your blueprint. We'll use the -auto-approve flag to bypass the final confirmation prompt.

Run: terraform apply -auto-approve

Step 2: Confirmation

How do you know it worked? You can use Terraform's own "eyes" (terraform show), or you can use the AWS CLI to verify that the bucket actually exists in the simulator.

Mission: Run aws s3 ls to see your creation.

Tactical Insight: The Source of Truth

Terraform doesn't just create things; it remembers them. If you run apply again without changing your code, Terraform will say "No changes needed." It is smart enough to know that your world is already in the state you requested.