About Terraform

Declarative cloud provisioning, state management, providers, modules & drift.

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Architecture & Workflow

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Key Benefits for Modern DevOps

• Automation: Eliminates repetitive manual procedures through codified configuration.
• Reliability & Consistency: Reduces configuration drift across development, staging, and production environments.
• High Observability: Provides deep telemetry into application and infrastructure health.

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Complete Curriculum Roadmap

This comprehensive handbook covers the entire Terraform engineering lifecycle across 12 structured modules:

Module 1: Introduction to Terraform

• What is Infrastructure as Code: Iac Overview, Traditional Vs Iac
• What is Terraform and how it works: Terraform Overview, Hcl Intro
• Terraform vs other IaC tools: Terraform Vs Cloudformation, Terraform Vs Ansible, Terraform Vs Pulumi
• Terraform architecture and workflow: Core Workflow, State Concept, Providers Registry

→ Explore Introduction to Terraform

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Module 2: Installation & Setup

• Installing Terraform: Install Windows, Install Mac, Install Linux
• Setting up providers: Aws Provider Setup, Provider Authentication, Provider Versioning
• Terraform CLI basics: Cli Cheatsheet, Init Plan Apply, Destroy, Fmt Validate
• VS Code setup & extensions: Vscode Setup, Terraform Extension

→ Explore Installation & Setup

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Module 3: HCL Fundamentals

• HCL syntax & structure: Hcl Types, Blocks Arguments Attributes, Comments
• Variables: Input Variables, Variable Types, Tfvars, Variable Validation
• Outputs: Output Values, Output Use Cases
• Locals: Locals Block, Locals Vs Variables
• Expressions & functions: Built In Functions, String Interpolation, Conditional Expressions, For Expressions

→ Explore HCL Fundamentals

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Module 4: Terraform State

• Understanding state: What Is State, Terraform Tfstate, State Vs Real Infra
• Local vs remote state: Local State, Why Remote State
• Remote backends: Backend Config, S3 Backend, State Locking Dynamodb
• State commands: State List, State Show, State Mv, State Rm, State Pull Push
• State best practices: Sensitive Data In State, State Isolation

→ Explore Terraform State

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Module 5: Core Resources and Data Sources

• Resource blocks deep dive: Resource Syntax, Meta Arguments, Lifecycle Rules
• Data sources: Data Block, Data Vs Resource, Common Data Sources
• Resource dependencies: Dependency Graph, Implicit Dependency, Depends On
• Provisioners: Local Exec, Remote Exec, File Provisioner, When Not To Use

→ Explore Core Resources and Data Sources

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Module 6: Terraform Modules

• What are modules: Module Concept, Root Vs Child Module
• Writing reusable modules: Module Structure, Inputs Outputs, Module Versioning
• Using public registry modules: Terraform Registry, Using Vpc Module, Using Ec2 Module
• Module composition patterns: Nested Modules, Passing Outputs, Module For Each
• Publishing modules: Github Registry, Semantic Versioning, Module Requirements

→ Explore Terraform Modules

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Module 7: Workspaces and Environments

• Terraform workspaces: Workspace Concept, Workspace Commands, Workspace Limitations
• Managing dev staging prod: Environment Strategies, Directory Based, Workspace Based
• Variable files per environment: Env Tfvars, Var File Patterns

→ Explore Workspaces and Environments

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Module 8: Provisioning AWS Infrastructure

• VPC and Networking: Vpc, Subnets, Igw Natgw, Route Tables, Security Groups, Nacl, Vpc Endpoints, Vpc Peering
• EC2 and Auto Scaling: Ec2 Instance, Key Pairs, Elastic Ip, Launch Template, Asg
• Load Balancers: Alb, Nlb, Target Groups, Listeners Rules, Acm Ssl
• S3 and Storage: S3 Bucket, Bucket Policies, S3 Security, S3 Website, Versioning Lifecycle
• RDS and Databases: Rds Instance, Subnet Groups, Parameter Groups, Aurora Cluster, Rds Replication, Snapshots
• IAM with Terraform: Iam Users Roles, Iam Groups, Iam Policies, Iam Trust Relationships, Instance Profiles
• AWS EKS (Elastic Kubernetes Service):

→ Explore Provisioning AWS Infrastructure

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Module 9: Advanced HCL and Meta Arguments

• count and for each: Count, For Each, Count Vs Foreach, Dynamic Resources
• dynamic blocks: Dynamic Block Syntax, Dynamic Security Groups
• Lifecycle meta argument: Create Before Destroy, Prevent Destroy, Ignore Changes, Replace Triggered By
• moved and import blocks: Terraform Import, Import Block 1 5, Moved Block

→ Explore Advanced HCL and Meta Arguments

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Module 10: Terraform with CI CD

• Terraform in CICD pipelines: Cicd Overview, Pipeline Concepts, Pipeline Stages, State Management In Cicd, Tf Automation Steps, Plan In Pr
• GitHub Actions with Terraform: Gh Actions Workflow, Plan Apply Workflow, Secrets Management
• Jenkins with Terraform: Jenkins Pipeline, Jenkinsfile Terraform
• Atlantis for GitOps: Atlantis Overview, Atlantis Setup, Pull Request Workflow

→ Explore Terraform with CI CD

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Module 11: Security and Secret Management

• Sensitive variables and outputs: Sensitive Variables, Sensitive Outputs, Sensitive Flag, Masking Secrets
• Managing secrets with Vault: Vault Provider, Vault Aws Secrets, Dynamic Credentials
• AWS Secrets Manager: Secrets Manager Tf, Rotating Secrets
• Least privilege for Terraform: Iam Tf Role, Permission Boundaries, Oidc Github Aws

→ Explore Security and Secret Management

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Module 12: Terraform at Scale

• Terragrunt: Terragrunt Overview, Terragrunt Vs Modules, Dry Configurations, Multi Account Terragrunt, Run All
• Large codebase patterns: Layered Architecture, Separation Of Concerns, Monorepo Vs Multirepo
• Terraform Cloud and Enterprise: Tfc Overview, Vcs Integration, Remote Runs, Cost Estimation
• Drift detection and remediation: Drift Detection, Terraform Refresh, Auto Remediation

→ Explore Terraform at Scale