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Lessons (21)

• Your First Terraform Project

  Install Terraform and create, change, inspect, and destroy a local file without using a cloud account. Prepare your …

• Terraform: Start Here

  … Avoid a large pile of shell provisioners inside Terraform. An application team might use Terraform to provision an …

• CI/CD and Reviewed Production Changes

  … Further reading: [Terraform in automation](https://developer.hashicorp.com/terraform/tutorials/automation/automate-terraform), [HCP Terraform](https://developer …

• Testing, Preconditions, and Policy Checks

  Use validation, lifecycle conditions, Terraform tests, and policy checks to catch different classes of errors. Different checks answer …

• Providers and Your First AWS Resources

  … Separate resources manage public access, versioning, and encryption settings. bash terraform init terraform fmt terraform validate terraform plan …

• HCL, Resource Addresses, and Project Layout

  Read Terraform blocks, expressions, references, and version constraints, and organize a root module clearly. Read a block Terraform …

• Variables, Locals, Outputs, and Validation

  … Further reading: [Input variables](https://developer.hashicorp.com/terraform/language/values/variables), [outputs](https://developer.hashicorp.com/terraform …

• Imports, Moved Blocks, and Safe Refactoring

  … Further reading: [Import overview](https://developer.hashicorp.com/terraform/language/import), [module refactoring](https://developer.hashicorp.com/terraform …

• State, Remote Backends, and Locking

  … State connects the address to the real object and records attributes Terraform needs for future operations. Two independent …

• Secrets, Ephemeral Values, and Least Privilege

  … Design runner credential renewal accordingly. Write-only arguments Terraform 1.11 added write-only resource arguments. The provider …

• Environments, Workspaces, and Multiple Accounts

  … Run Terraform in the intended environment directory; CI should specify that directory explicitly. Keep root-level differences visible …

• Count, for_each, Functions, and Stable Identities

  … 0 filename = "${path.module}/README-generated.txt" content = "Generated by Terraform.\n" } When present, the address is local …

• Dependencies, Data Sources, and Resource Lifecycle

  … It is not a substitute for IAM, backups, or review. create before destroy asks Terraform to create a …

• Drift, Troubleshooting, and Disaster Recovery

  … Decide whether the change was intentional. bash terraform plan -refresh-only -out=observed.tfplan terraform apply observed.tfplan …

• Reusable Modules and Clear Interfaces

  … Further reading: [Module development](https://developer.hashicorp.com/terraform/language/modules/develop).

• Safe AWS Deployments with IaC and CI/CD

  … Continue with the [Terraform learning path](/learn/terraform) for a detailed plan/apply workflow. Further reading: [CloudFormation change …

• Multi-Account Strategy, Governance and Security Operations

  … Customize with Account Factory for Terraform or CloudFormation StackSets so every account gets the same baseline. Access across …

• Resilience, Disaster Recovery and Multi-Region Design

  … everything as code (CloudFormation, CDK, Terraform) and container images replicated with ECR cross-region replication ; AMIs copied to …

• Containers at Scale: ECS Deep Dive and EKS

  … Argo CD or Flux) and infrastructure as code (Terraform, CDK, eksctl) for repeatable clusters. - Observe with Container Insights …

• Practical Project: Deploy a Real CRM App on EKS

  … get nodes one node should be Ready Prefer Terraform or CloudFormation once the shape is stable; eksctl is …

• Practical Lab: S3 File Upload and CloudFront Delivery with NestJS

  … cross-region replication - [ ] Manage all of this with Terraform or CloudFormation so it can be recreated 14. Clean …