Aimee Maree Forsstrom discusses her journey in advocating for open source software within the Australian government, highlighting the transition from proprietary systems to open source solutions starting in 2008. She emphasizes the need for policy changes that led to the Australian government's 2011 requirement for agencies to consider open source software in procurements and explores the benefits of this shift, including reduced costs and improved collaboration among departments. The document reflects on the cultural shift within IT departments and the increasing adoption of open source software leading to faster development cycles, increased innovation, and better citizen engagement.