A Sophisticated Architecture Is Indeed Necessary for the Implementation of Health in All Policies but not Enough Comment on "Understanding the Role of Public Administration in Implementing Action on the Social Determinants of Health and Health Inequities".

In this commentary, I argue that beyond a sophisticated supportive architecture to facilitate implementation of actions on the social determinants of health (SDOH) and health inequities, the Health in All Policies (HiAP) project faces two main barriers: lack of awareness within policy networks on the social determinants of population health, and a tendency of health actors to neglect investing in other sectors' complex problems.