An input/output variable's external name is used for which purpose?

The external name of an input/output variable serves the purpose of uniquely identifying it within the Power Automate UI. This unique identification is critical for maintaining clarity and avoiding confusion, especially when working with multiple variables in complex automations or when collaborating within teams.

By having a distinct external name, users can easily locate and refer to the variable throughout the development and execution of their workflows. This becomes particularly important in scenarios where variables might be used across different flows or subflows, enhancing the readability and manageability of the automation.

While other options refer to different functionalities of input/output variables, the role of the external name as a unique identifier in the UI is paramount for efficient workflow management and collaboration.