International audienceUnderstanding the processes that guide fleet management by corporations is key to assessing the role that corporations could play in the transition toward a more sustainable mobility system and to drawing operational policy conclusions accordingly. Building on the information collected through 44 interviews with decision makers from 22 large organizations in the Paris region yields a much deeper understanding of the fleet management processes of large organizations. It was found that the prospects for global optimization of the corporate car fleet—from the perspectives of both purchase behaviors and daily operations—depend on the solutions that corporations can find to tackle the complexity of the decision-making proce...