The main aim of opening up innovation is to optimize the process of creating innovations, while pooling human, financial and material resources. Various profiles of actors are thus brought together to collaborate to achieve common objectives and particular interests. This book describes the challenges of collaboration in the development of innovations in a context where the sustainability of value chains is central. The diversity of collaborative forms, shared spaces (FabLab, LivingLab, co-working spaces), the intrinsic characteristics of innovation, and the actors actively involved in its emergence are all addressed in this book. The structuring of partners collaborating in innovative projects in specific environments is also discussed. Furthermore, it questions the social responsibility of companies and their innovative role in generating sustainable solutions for stakeholders.