Book excerpt: This is the first book describing cable networks, services, and their management in greater detail by thirteen experts in various fields covering network architectures and services, operations, administration, maintenance, provisioning, troubleshooting (OAMPT) for residential services; network architectures, services, and OAMPT for business services; Software Defined Networks (SDN) and Virtualization concepts Comprehensive reference book useful for people working for a multiple systems operator Includes chapter introductions Written by 13 experts in various fields such as network services and soft defined networks