This book is structured into seven chapters, following a general-to-specific format. Chapter one serves as an overall introduction to the book, focusing on the conceptual definitions and interrelationships between digital technology, industrial digitization, and the digital economy. It elaborates on the pivotal role of digital technology in the digitization of industries and the development of the digital economy. Additionally, it introduces the top ten digital technologies and their overall reference architecture for integration and application in traditional industries.From Chapter two to Chapter seven, the book delves into the hierarchical structure of these top ten digital technologies, from the fundamental to the more advanced levels. Detailed analysis and explanations are provided for technologies such as cloud-native, distributed cloud, artificial intelligence, blockchain, and the like. Furthermore, the book explores the current applications, construction planning, and implementation paths of these digital technologies in traditional industries.