This document discusses the origins and development of XCRI (eXchanging Course-Related Information), an open standard for exchanging course information. It began in 2005 when JISC funded the XCRI reference model project to create a better way to exchange course data than the existing primitive methods. The XCRI standard was developed through trials and engagement with European partners to harmonize with the CEN MLO course advertising standard. While XCRI adoption has faced challenges due to systems and processes, it is positioned to be the UK implementation of MLO and align with the upcoming Key Information Sets requirement for UK universities to publish standard course information.