Abstract: Quebec and Canadian organizations, communities, and professionals working collectively to address complex social issues in dynamic contexts are enthusiastically embracing social innovation. Some of this innovation’s limitations have been revealed by formative and summative evaluation approaches. Developmental evaluation (DE) could be a potential solution. This article combines scientifi c literature with the experience of experienced DE practitioners in Quebec. Balancing project management and evaluation, knowledge production and transformation of practices, continuous iterations and setting deadlines is at the very core of an eff ective DE approach.