In this session, Colin Knight explores the role of mainframes—particularly Db2 for z/OS—in the evolving world of big data. Drawing on his extensive experience at NatWest, he shares how mainframe data is delivered into big data environments using tools such as Infosphere CDC, Q Replication, and unload processes. Colin also looks ahead to the future of mainframes in big data, offering his perspective on how Db2 data can best be integrated into modern analytical frameworks. He concludes with reflections, a puzzle on big data, and an open discussion with attendees.