Key messages addressed in this policy brief include: Crop diversification is a dynamic process that should be tailor-made to local contexts to help achieve sustainable agrifood systems. The complex and uncertain context of crop diversification requires actors to search and contextualize knowledge for action with adapted tools, resources and dedicated networks. Instead of ready-to-use and prescriptive solutions, tools and resources to design, assess and drive crop diversification strategies are needed. AKIS actors need to be outfitted with new skills and attitudes to act within and have impact on the sociotechnical context. Specific knowledge, know-how and soft skills are needed to accompany farmers, advisors and all actors in agricultural knowledge systems Current training and education programmes still need to take up concepts, approaches and tools related to crop diversification DiverIMPACTS provides tools and resources that can be directly mobilized by actors