Sufficiency is increasingly recognized as a cornerstone of the ecological transition, alongside efficiency and technological innovation. It encourages us to rethink how we use energy and resources, how we produce and consume, and the collective choices that shape our societies. This event will explore the strategic, economic, and political dimensions of sufficiency, highlighting its role in building a just transition. Researchers, experts, and institutional actors will share their perspectives to enrich the debate on how sufficiency can be implemented in ways that are both ambitious and realistic.