In the last few years, service science has opened a debate on the need to adopt new approaches to better understand emerging social and economic dynamics. By following this direction, different multi- and trans-disciplinary research pathways are requesting to consider an increasing number of new variables in the management of Complex Service Systems (CSSs), underlying the fact that traditional approaches are useless in supporting decision makers in facing the challenges imposed by a more articulated scenario. To bridge this gap, the paper focuses attention on the phenomenon of ‘smart cities’ as an example of CSSs with the aim to investigate in which ways actors’ perceptions affect opportunities and willingness for value co-creation and co...