Centered around how PaaS hosts computing networks, this book helps readers understand PaaS platforms’ role in hosting computing networks. Chapters 1 and 2 provide background introductions, focusing on the development background of computing networks and the historical evolution of operators’ IT architecture. Chapters 3 to 9 discuss PaaS for computing networks, specifically detailing the role of PaaS platforms in hosting computing networks in various aspects. Chapter 10 presents a practical case of applying the Panji PaaS platform to bridge the gap between eastern and western regions in computing resources. Chapter 11 offers insights into the future evolution of PaaS in computing network scenarios.