Service networks are a new research field which promises to increase our knowledge of service-based systems. Understanding what factors explain the evolution of global service networks can lead to more efficient and balanced infrastructures. The challenge consists in developing a novel perspective by connecting models representing services (e.g. cloud computing and governmental services) into networks. Theories, methods, and applications to be developed will enable, afterwards, to understand, describe, explain, analyse, predict, and control the structure and behaviour of global service networks.