Terraform — Complete Guide
Terraform — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of AWS Cloud Tutorial on Toolliyo Academy.
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AWS Cloud Tutorial · Lesson 45 of 100
Terraform
Core services → Projects
Core services · 1 — AWS basics · ~6 min · AWS — DevOps & Automation
What is this?
Terraform is HashiCorp IaC using HCL. The AWS provider manages resources with plan/apply workflow and remote state in S3.
Why should you care?
AwsVerse platform team uses Terraform for multi-cloud modules while CloudFormation handles AWS-native org resources.
See it live — copy this example
Run in AWS CloudShell / local AWS CLI v2, or follow the matching steps in the AWS Console (Free Tier).
resource "aws_s3_bucket" "docs" {
bucket = "awsverse-docs-${data.aws_caller_identity.current.account_id}"
}
resource "aws_s3_bucket_versioning" "docs" {
bucket = aws_s3_bucket.docs.id
versioning_configuration { status = "Enabled" }
}What happened?
- Terraform HCL creates a versioned S3 bucket named with account ID.
- terraform plan previews changes; apply executes them.
Practice next
- Install Terraform; configure AWS provider.
- terraform init with S3 backend block.
- plan and apply in lab account.
- Add aws_s3_bucket_public_access_block resource.
- Import existing VPC into state.
Remember
Terraform = multi-cloud IaC. Remote state in S3 plus DynamoDB lock. Plan before apply always.
AwsVerse TF modules
SaaS tenant infra differs only by name prefix.
Outcome: One module parameterized per tenant cuts provisioning to minutes.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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