The concept of Mobility as a Service (MaaS) has become widespread in Western countries and has become a solid market option, presenting a transport system offer based no longer on ownership but use. This approach places the user at the heart of urban mobility issues, so consumers must be open to adopting new technologies and services, such as autonomous vehicles. Based on our research, this Ph.D. thesis aims to analyze the concept of MaaS in order to identify the conditions for its implementation and diffusion in tomorrow's urban mobility. We found that to take a sustainable place in the urban mobility system, MaaS must be considered as a modular and adaptable business model applicable to all socio-political, regulatory, environmental, and economic contexts. To this end, the business model of this innovative ecosystem must take into account consumer acceptance, coordination of the multiple actors making up the value chain within a MaaS and existing transport systems that are specific with their development of technological.