ABSTRACT: Urban resilience is a new approach in urban development and risk management that focuses on disturbance absorption and functions recovery. Urban resilience is then based on urban services which support the cities functions and yet, display several critical issues in risk management. When considered as socio-technical systems in which physical network and governance are interacting, urban services are subject to continuity issues, mainly because of interdependencies. We propose here a collaborative method to help managers identify both technical and organizational dependencies so that they can share a common representation of the urban system and discuss its global resilience. The Parisian transportation system (RATP) illustrates the first part of the method: the auto-diagnosis tool to identify and prioritize dependencies. Then the rest of the method is shortly described and we outline the interest of the research in improving urban resilience.