Amidst the general mood of skepticism about the problem-solving capacity of governments in the face of 'wicked problems', it is easy to overlook that at times governments do manage to design and implement public policies and programs quite successfully. In this paper, we build on an emerging area of 'positive evaluation' research into public policy successes (Bovens et al 2001; McConnell 2010; Nielsen et al 2015). Using the conceptual tools emanating from this research and drawing on a corpus of 33 such cases (Compton and 't Hart 2019; Luetjens et al, 2019), we draw inferences about the contexts, strategies, and practices that are conducive to policy success. We find compelling evidence that process inclusivity is a pivotal factor, but certainly not the only one, on the path to policy success. Variation in the degree of innovation and the pace of change also emerge as interdependent and important factors.