INTERLINK (Innovating government and citizen co-delivery for the digital single market) aims to overcome the barriers preventing administrations to reuse and share services with private partners (including citizens) by developing a novel collaborative governance model that merges the enthusiasm and flexibility of grassroot initiatives with the legitimacy and accountability granted by top-down e-government frameworks. We believe that a solution incorporating the strengths of these two approaches will be able to overcome their individual limitations, namely lack of involvement of private actors, transparency and trust for “top-down” and lack of sustainability, accountability, and legitimacy for “bottom-up” initiatives.