Presented by Frances McNamara, Director, Integrated Library Systems and Administrative and Desktop Systems at the University of Chicago. Presentation given on the University of Chicago VuFind discovery layer implementation at the Kuali Days UK conference, 29 October 2013. The session focused on discovery layer choices – software-as-a-service, open source or community source – of three libraries that are actively planning integration with Kuali OLE, including perspectives from the University of Chicago, Indiana University and the University of London and featured specific use cases for OLE discovery layer implementations at their institutions and what influenced their choices.