The unified audit log includes Copilot for Microsoft 365 audit events captured when users interact with Copilot through apps. The information is very helpful in terms of understanding the usage of Copilot in different apps (apart from Outlook, which isn’t captured). Some care needs to be taken to understand the data and interpret the audit events, but that’s usual when dealing with Microsoft 365 audit data.
https://office365itpros.com/2024/04/03/copilot-for-microsoft-365-audit/
