This book presents: • The results of an empirical analysis of the new phenomenon of virtual clusters (VCs), which highlight the dynamics of these emerging innovation networks in the digital economy; the challenges that this dynamics represents for the conventional theories, which are unable to define a comprehensive framework that supports the development of these networks.• An overview of the most significant theoretical approaches to innovation networks, and their rethinking in the digital economy scenario. Following a neo-Schumpeterian approach, a particular focus is on the...