This book provides the necessary elements to determine exactly what information should be collected to make the collected information relevant for policy makers. It highlights the dissatisfaction of information users about the information they get and the reasons for this dissatisfaction. It also discusses general issues around the role and use of information in policy making. The text then describes the how to develop a full understanding of the policy makers' information needs and will describe how policy makers can be included in the process. Finally, the book describes how the results from this process are input for the information production process.