This document summarizes a case study of how an Australian investment bank improved their IT incident management through better root cause analysis practices. They implemented four strategies: 1) Improving stakeholder commitment by introducing formal RCA processes and tools for subject matter experts to contribute. 2) Improving information management by introducing frameworks to align investigations with severity levels and focusing investigations. 3) Improving information quality by converting raw data to meaningful insights and deductive reasoning. 4) Improving investigation support through training internal RCA investigators and facilitators. As a result, they reduced downtime by 60%, virtually eliminated recurring incidents, and improved productivity.