The Displacement Tracking Matrix (DTM) is a set of tools, components and methodologies used to gather, analyze and disseminate critical and multi-layered information on mobility, vulnerabilities and needs of displaced and mobile populations. DTM started operating in 2004, and has been continuously refined and enhanced through years of operational experience in over 80 countries in both conflict and natural disaster settings. DTM provides decision makers with primary data and information on human mobility, both in country and at the regional and global level. In the East and Horn of Africa, DTM is the official provider of internal displacement figures in Burundi, Ethiopia and South Sudan, while the regional network of flow monitoring points established in key areas of high mobility tracks cross-border movement trends. DTM has four distinct methodological components for data collection: mobility tracking, flow monitoring, registration and surveys.