Pretty cool - you can use generate a SAS token for sharing (in a time-limited way, up to 1 hour) access OneLake resources.
What's the use case?
OneLake SAS make it easy to provide limited access to applications which may not support Microsoft Entra, as well as support applications serving as proxy layers between users and their data in OneLake. OneLake SAS follow security best practices for delegated access by always being short-lived and user-delegated.