With a large user base, it’s important to keep track of any changes being made to Workflows that used across Confluence. The Audit Log shows an in depth log of every change that has been made to a Workflow.
To access the log you must be a Global Admin and navigate to Global Settings > Audit Log (Workflows for Confluence)
The log shows you the Event, the Workflow, who completed the Event, if it’s a Global/Space Workflow and the time.
You also have the ability to Export the Audit Log to CSV in the top right corner.