This book introduces the background, basic concepts and evolution of computer network development; by comparing and contrasting with the typical network architectures in the market. The book focuses on the architecture and underpinning technologies towards the future in network designs. It also provides a reconfigurable evolutionary network function innovation platform for researches to run experiments on the networks they designed. The contents of this book are novel, informative, and practical — a reflection of the state-of-art development in network architecture. This book is written for engineers and researchers specializing in communications or computer networks. It could also be adopted as a textbook for graduate students majoring in communications, computing, and computer network related disciplines in colleges and universities.