Creating Reusable Modules

In the previous lesson, we learned about using existing Terraform modules. Now, let's dive into creating your very own reusable modules!

Authoring modules helps you encapsulate common infrastructure patterns, making your configurations cleaner, more consistent, and easier to maintain.

A Terraform module is essentially a collection of .tf files stored in a dedicated directory.

At its simplest, a module directory will contain:

• variables.tf: Defines input variables for the module.
• main.tf: Contains the actual resource declarations.
• outputs.tf: Defines output values from the module.

You can also include versions.tf for provider requirements and README.md for documentation.