This book is a teaching material for undergraduate management majors of applied undergraduate courses. It covers all aspects involved in e-commerce processes and is relatively comprehensive and novel. The book consists of 12 chapters, including overviews, transaction models, key links, and new applications. It focuses on B2C, C2C, B2B, and cross-border e-commerce models. It focuses on network marketing, network security, online payment, logistics, and customer relationship management. Key links such as the introduction of general introduction, after the brief introduction of mobile e-commerce and Internet of things, e-government and other new applications of e-commerce. Each chapter has an introduction to the beginning of the chapter, each chapter has a case at the end of training, to the specific operation or case analysis; chapter after the exercises include objective questions and skills operating questions. This book provides electronic lesson plans, electronic.