How can you override a variable value during execution?

To override a variable value during execution, one effective method is to utilize the -var option in the command line interface (CLI) or to provide a variable file using the -var-file option. This allows users to pass in variable values directly at runtime, providing flexibility and control over how configurations are applied without altering the Terraform configuration files themselves. This is especially useful when you have different environments (like development, staging, and production) that might require different values for certain variables.

The ability to specify variables at execution through these methods means that changes can be made without needing to modify the actual Terraform scripts, ensuring that the scripts remain clean and version-controlled while still allowing dynamic input.

While other choices could be potential ways to influence variable values, they do not align with the standard practices for overriding variables. For example, editing the main configuration file (like the main.tf file) means changing the codebase, which can lead to inconsistency and is less efficient for temporary overrides. Setting environmental variables can be another approach, but it often requires a specific naming convention and does not bind as explicitly to specific variable definitions as the -var or -var-file options do. Finally, applying a custom module with a different variable can be related to changing variable values, but