This edited volume explores the process by which SMEs internationalize. It discusses the importance of domestic and international networks for firms’ activities and business performance. Offering vast empirical evidence from different industries, the book begins with a theoretical overview of internationalization and networks and goes on to examine the value of knowledge as provided by both domestic networks (i.e. the networks that a firm develops with providers, clients, competitors, local institutions and multinationals), and international network (i.e. business networks, venture capital firms, and global value chains) where the firm is able to use international contacts as a bridge for further development. Offering a valuable contribution on the topic of internationalization, the book also establishes the main implications for practice.