Which file extensions are associated with Terraform configuration files?

Terraform configuration files primarily use the extensions .tf and .tfvars. The .tf extension is used for the main configuration files where the infrastructure resources are defined, including providers, resources, variables, and outputs that Terraform will use to provision and manage the infrastructure.

The .tfvars extension is specifically designated for variable definition files, where you can set values for the variables declared within your .tf configuration files. This allows for better organization and separation of configuration settings, particularly in different environments or for different deployments.

Using these specific extensions helps Terraform recognize the files appropriately, ensuring the configuration is processed correctly during execution. Other formats such as .json or .yaml might be used for different purposes in other tools or environments, but they are not part of the standard file extensions recognized by Terraform for configuration.