The Monitoring the Global and Domestic Tobacco Epidemic program aims to monitor the global tobacco epidemic, enhance tobacco control programs in high-burden countries, and measure reductions in e-cigarette use by integrating retail sales data into national surveys. The CDC Foundation supports the CDC in implementing the Global Tobacco Surveillance System, enhancing country capacity to design and evaluate tobacco control interventions, and monitoring WHO, FCTC, and MPOWER components. The Global Adult Tobacco Survey (GATS) systematically tracks adult tobacco use. Contractors on the GATS Sample Review Committee will ensure high-quality, nationally representative samples using established protocols and quality assurance guidelines.