Living lab is becoming a popular concept to design integrated solutions through the integration of users in the each stages of an innovation process. This study uses the systematic literature review methodology in order to research the suitable methodology for modelling a Living Lab decision- making process that enabling multi-stakeholders, especially citizens of Smart City projects leading to the research agendas for the coming years. Finally, a conceptual framework of collaboration involving multi-stakeholders to follow the share decision-making process in a Living Lab platform is proposed.