Book excerpt: "Surveillance is the ongoing, systematic collection, analysis, and interpretation of health-related data essential to the planning, implementation and evaluation of public health practice. It is closely integrated with the timely determination of data to those responsible for prevention and control. The atlas visualizes a decade of work in establishing the Global Tobacco Surveillance System (GTSS), which has become the largest public health surveillance system ever developed and maintained. The atlas documents the components of the GTSS, which include the monitoring of tobacco use and tobacco control measures among youth, school personnel, health professions students and adults. It maps the coverage of the surveys and provides data on the various elements of a comprehensive tobacco control strategy outlined in the Who- FCTC and MPOWER policy. It illustrates the importance of enhancing country capability to develop, implement and evaluate tobacco control programs though and a systematic framework. This resource will be invaluable to policy makers, public health practitioners, scholars and students interested in tobacco control." - p. 9