Variable Definition File

A Terraform variables.tf file centralizes input variable declarations for a module or configuration. It typically contains multiple variable blocks, each defining a single input variable with its name, type constraint, optional default value, and description. This file serves as a single reference point for all variables used in the configuration, enhancing readability and maintainability. While not mandatory, using variables.tf is a common practice to organize and document a module's expected inputs.

Learn more from the following resources:

• @official@Parameterize Your Configuration
• @video@You should be using tfvars vs variables in Terraform