The document summarizes a workshop on strengthening functional capacities within the SUN Movement to scale up nutrition. It discusses the three dimensions of multi-stakeholder engagement, multi-sectoral coordination, and multi-level alignment that are important for capacity development. Some of the greatest challenges identified are effective coordination arrangements, building trust and leadership, establishing transparent accountability mechanisms, and knowledge sharing. The workshop aims to understand what is working well, identify priority needs and resource gaps, and harness discussions to support further progress on functional capacities through a community of practice.