This report delves into the realm of operations management, exploring the significance of computer networks, the diverse landscape of e-business models, and the evolving dynamics of selling in the digital age. It begins by defining computer networks, differentiating between client/server and peer-to-peer architectures, and highlighting the role of wireless technologies like Wi-Fi and wireless repeaters in modern business operations. The report then transitions to e-business models, examining both Business-to-Business (B2B) and Business-to-Customer (B2C) approaches, along with their respective advantages and disadvantages. It emphasizes how the internet and network infrastructure have transformed business processes, enabling increased efficiency, global reach, and enhanced customer engagement. Finally, the report contrasts traditional selling methods with online selling, focusing on the impact of digital platforms on customer behavior, information access, and purchasing decisions. The analysis concludes by underscoring the critical role of the internet and networks in attracting customers, maximizing profits, and fostering business growth in today's competitive environment.