The conference Identifying Europe’s information needs for effective drug policy marked the 15th anniversary of the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA), and our activity of monitoring drugs and drug addiction in the European Union. It had several objectives: to better understand the current needs of policymakers, practitioners and researchers, to identify new developments in the drugs field and new results of drug-related research, and to provide input on the future work of the EMCDDA and its partners. This publication summarises the presentations and discussions from the plenary and parallel sessions. It reflects the dynamism and commitment of those who study and respond to the drugs problem, and who made the conference such a productive, stimulating and successful event. The content of this publication will therefore be a vital tool for guiding the further development of our activities here in Lisbon.