The Best Terraform Automation Online Training Institute - Hyderabad
                     What Are Terraform 
Modules and How to 
Use Them?
+91-9989971070 
www.visualpath.in
Introduction to Terraform
 Overview: What is Terraform?
o Open-source Infrastructure as Code (IaC) tool
o Developed by HashiCorp
o Used for provisioning and managing cloud infrastructure
 Key Features:
o Declarative Configuration
o Plan and Apply
o Provider Support www.visualpath.in
2
▰ What is a Terraform Module?
 Definition:
o A module is a container for multiple resources that are used 
together.
o It encapsulates infrastructure components.
 Purpose:
o Reusability
o Maintainability
o Organization of code
www.visualpath.in
3
Why Use Terraform Modules?
 Benefits:
o Reusability: Write once, use many times.
o Consistency: Standardize configurations.
o Simplification: Break down complex configurations.
o Collaboration: Share modules with teams.
www.visualpath.in
▰ Structure of a Terraform Module
 Components:
o Main Configuration: main.tf
o Variables: variables.tf
o Outputs: outputs.tf
o Dependencies: providers.tf
 Best Practices:
o Use a standard naming convention
o Keep modules small and focused
o Document modules clearly www.visualpath.in
5
▰
“Using Modules in Terraform Steps to Use a Module:
○ Source: Define the module source (local path, remote repository, or 
Terraform Registry).
○ Configuration: Set up the configuration using input variables.
○ Instantiation: Use the module in your root configuration.
 Example: High-level overview of referencing a module
www.visualpath.in
6
▰ Finding and Using Public Modules
 Terraform Registry:
o Centralized repository for discovering, sharing, and reusing 
Terraform modules.
o Categories and filtering options.
 Community Modules:
o Examples of popular modules (e.g., AWS VPC, GCP Compute 
Engine)
 Best Practices:
o Review and understand the module’s code
o Check for updates and compatibility www.visualpath.in
7
▰ Creating Your Own Module
 Steps:
○ Plan Your Module: Identify the infrastructure components.
○ Organize Files: Use the recommended structure.
○ Define Variables and Outputs: Make your module configurable.
○ Write Main Configuration: Implement the desired infrastructure.
○ Document the Module: Provide clear instructions and examples.
 Example: Conceptual walkthrough of creating a basic module
www.visualpath.in
8
▰ Best Practices for Using Terraform Modules
 Consistency: Follow naming conventions and standard practices.
 Documentation: Maintain thorough documentation for each 
module.
 Versioning: Use version control for modules to manage changes.
 Testing: Test modules thoroughly before using them in production.
 Collaboration: Share modules within teams to promote reusability 
and consistency.
www.visualpath.in
9
▰ Common Challenges and Solutions
 Challenges:
o Managing dependencies
o Version conflicts
o Large state files
 Solutions:
o Use version constraints
o Split large configurations
o Use remote state management
www.visualpath.in
10
Conclusion
 Recap:
o Importance of Terraform modules
o Key benefits and best practices
o Encouragement to start using and creating modules
 Next Steps:
o Explore Terraform Registry
o Practice by creating simple modules
o Join the Terraform community for support and resources
Q&A
 Interactive Session:
o Open the floor for questions
o Provide answers and additional resources if needed www.visualpath.in
11
References and Resources
•Resources:
Terraform Documentation
Terraform Registry
HashiCorp Learn Platform
Community Forums and Tutorials
This structure should provide a comprehensive and engaging presentation 
on Terraform Modules, focusing on conceptual understanding and practical 
guidance without the need for coding.
www.visualpath.in
12
CONTACT
For More Information About 
Terraform Automation in Azure Cloud
Address: Flat no:  205, 2nd Floor
                                                                         NilagiriBlock, Aditya Enclave,
                                                                         Ameerpet, Hyderabad-16
                                                         Ph No:  +91-9989971070
                                                            Visit:  www.visualpath.in
                                                        E-Mail:  [email protected]
THANK YOU
Visit: www.visualpath.in