This document summarizes the autumn conference of NESMA held on November 9th 2017. It introduces the speakers Alisa Westerhof, a data management and big data expert, and Stefan Kuiper, a sourcing expert. It discusses past IT projects of the Dutch government that resulted in billions of euros in losses. It outlines the scope and independence of BIT, an organization that assesses large IT projects. BIT focuses on whether projects will solve problems and the likelihood of success given the chosen approach. It lists principles for successful projects and provides lessons learned using illustrations.