This comprehensive book is an introduction to the fundamental concepts of transport and data networks, discussing key components and techniques such as photonic network architecture; transport, synchronous optical, and optical transport networks; and dense wavelength division multiplexing. The evolution of the telecom standardization bodies and processes as well as the key standards governing the functioning of asynchronous optical networks are also detailed in this book. This is a useful guidance book for graduate students who are entering the complex and rapidly developing field of optical telecommunication networks and high-speed data centers, as well as a valuable reference for engineers and researchers who are working on photonic telecommunication networks. Review by Lisa Tongning Li, Inphenix, Inc., Livermore, Calif., USA. The opinions expressed in the book review section are those of the reviewer and do not necessarily reflect those of OPN or OSA.