Stakeholders show a growing interest for organic food and farming (OFF), which becomes a societal component. Rather than questioning whether OFF outperforms conventional agriculture or not, the main question addressed in this book is how, and in what conditions, OFF may be considered as a prototype towards sustainable agricultures. The book gathers 25 papers introduced in a first chapter. The first section investigates OFF production processes and its capacity to benefit from the systems functioning to achieve higher self-sufficiency. The second one proposes an overview of organic performances providing commodities and public goods. The third one focuses on organics development pathways within agri-food systems and territories. As well asa strong theoretical component, this book provides an overview of the new challenges for research and development. It questions the benefits as well as knowledge gaps with a particular emphasis on bottlenecks and lock-in effects at various levels.