What is the label parameter's role in InvocableMethod definitions?

The label parameter in InvocableMethod definitions serves a crucial function by providing a human-readable name for the action that users will interact with in Flow Builder. When developers create a method that can be invoked from a Flow, the label allows that method to be represented with a clear, descriptive title within the Flow interface. This enhances usability, as users can easily identify the purpose of the action without needing to look at the underlying implementation details.

The label parameter ultimately improves the user experience in Flow Builder by making it easier to understand what actions are available and what each one does, thus streamlining the process of creating automation flows in Salesforce.