What element is crucial in defining output results from a subflow?

Output variables are essential in determining the results that a subflow produces because they define what data will be passed back to the parent flow after the subflow has completed its execution. These variables serve as a mechanism for communication between the subflow and its parent context, allowing the parent flow to utilize the processed data or results generated within the subflow.

When a subflow is invoked, output variables enable it to return specific information, such as status updates or data transformations, which can then be used for further processing or decision-making in the parent flow. This capability enhances workflow efficiency, as the parent flow can react to or utilize the results of the subflow immediately after its execution.

Understanding how output variables function within the context of subflows is crucial for effectively designing automated processes in ServiceNow's Flow Designer, as it directly impacts the flow's ability to handle data and execute complex workflows seamlessly.