DORIS is an advanced downstream service for the detection, mapping, monitoring and forecasting of ground deformations, including landslides and ground subsidence, at different temporal and spatial scales and in various physiographic and environmental settings. DORIS integrates traditional and innovative Earth Observation (EO) and ground based (non-EO) data and technologies to improve our understanding of the complex phenomena that result in ground deformations, and to foster the ability of Environmental and Civil Protection authorities to manage the risks posed by ground deformations. DORIS delivers innovative products at the regional and local levels, tailored on the needs of national and local Civil Protection authorities. For the purpose, DORIS integrates state-of-the-art national technological and scientific capabilities with existing European upstream services. DORIS complies with guidelines provided by the EU Emergency Response Core Services, and is designed to be linked to existing Core Services. DORIS benefits from a unique partnership of leading research institutes and commercial providers, and is expected to stimulate European competitiveness and sustainable development.