The document provides a summary of the October 19th, 2017 NRB Mainframe Days event at the Crowne Plaza Brussels. It discusses challenges facing mainframe systems like reducing software costs, ensuring continuity of skills, and promoting agility. It outlines NRB's mainframe outsourcing services and catalog, including infrastructure, platform as a service, and software/system management. NRB's mainframe organization structure is also summarized, covering architecture, engineering/support, and production roles. The epilogue emphasizes the mainframe's role in powering critical global transactions and its cost-effectiveness compared to alternative platforms.