The 24th MC CATALOGUE User Group meeting was hosted by NCB Hungary in splendid Budapest. We appreciate excellent organization and hospitality of Hungarian NCB who is chairing the MCC UG this year. As usually, AURA and MCC UG members shared their experience with MC CATALOGUE and plans for future development. The NATO Data Exchange Redesign (NDER) project was an important topic for discussions. We look forward to the next meeting organised by NCB Sweden – MCC UG chair in 2019.