 This paper provides an overview of the development of practical guidance on evidence-informed deliberative processes, EDPs, as well as a description of the conceptual framework of EDPs. It also presents the revised steps of EDPs and how selected health technology assessment, HTA, bodies organize key issues of legitimacy in their processes. The paper concludes that while there is increasing attention for improving legitimacy in decision-making processes, HTA bodies are still lacking or just starting to develop activities in this area. This article was authored by Weija Ortwin, Martin Janssen, and Rob Baltussen.