Artificial intelligence (AI) and machine learning are making weaponry and defence systems more sophisticated. As the threat landscape continues to evolve, the Department of National Defence (DND) and the Canadian Armed Forces (CAF) will need to make faster and better decisions to defend North America against new and emerging threats. This special report summarizes the findings of a series of interactive virtual workshops on using AI to address defence and security issues. Hosted by the Centre for International Governance Innovation and Defence Research and Development Canada, the workshops invited experts from Canada’s AI innovation sector and DND/CAF to share their perspectives on how the development and adoption of AI is impacting defence and security.