Which of the following best describes a "Subflow" in Flow Designer?

A "Subflow" in Flow Designer is best described as a smaller flow that can be called from another flow. This concept is integral to the functionality of Flow Designer because it allows developers to create modular and reusable components within their automation processes. By defining a subflow, you can encapsulate specific tasks or actions that can be executed by multiple parent flows, enhancing efficiency and maintainability.

This modular approach not only helps in reducing duplication of effort—since common logic can be shared—but also simplifies the overall architecture of complex flows. When a subflow is designed, it can be easily maintained or updated without affecting all flows that utilize it, providing flexibility in process management.

In contrast, the other options do not accurately represent the functionality of a subflow. For example, being a standalone application outside of Flow Designer does not align with the concept of a subflow, as subflows are inherently designed to function within the context of other flows. Similarly, a subflow is meant to be customizable and adaptable, which contradicts the idea of a preset action that cannot be customized. Lastly, while subflows are indeed visual components within a flow, this description does not convey their primary purpose or functionality in the automation process.