This report addresses the current and future context for urban mobility, including the sustainability challenges ahead. It reviews how the urban mobility landscape is changing with respect to mobility operators and services. It also addresses the development and characterization of Mobility as a Service (MaaS) as a means to improve urban mobility outcomes. Finally, it reviews several essential governance and regulatory challenges that we must address to create a healthy Mobility as a Service ecosystem that delivers clear benefits to people and aligns with societal objectives.