SubFlows in ServiceNow Flow Designer

In ServiceNow Flow Designer, subflows are reusable actions or smaller units of logic that can be called from a parent flow or another subflow. They cover specific processes, making them reusable and easier to maintain across different automation scenarios. Subflows allow developers to create reusable logic without rewriting the same steps repeatedly in various flows. They are essential in managing complexity, improving maintainability, and enhancing overall system efficiency. Subflows have inputs, which are the data or parameters provided to the subflow when it is executed, and outputs, which are the data returned to the calling flow after the subflow runs. Inputs are like ingredients passed into a recipe, while outputs are the results or outcome of the subflow. A basic use case for subflows is creating a subflow that handles the creation of change requests, which can be reused in multiple parent flows. The advantages of using subflows include reusability, simplicity, and maintainability. Best practices for working with subflows include limiting inputs and outputs, testing regularly, and using subflows for repetitive tasks. By understanding subflows, developers can build efficient and maintainable solutions that simplify complex workflows.