This document provides an overview of e-commerce concepts. It defines e-commerce as the process of buying, selling, transferring or exchanging products, services and information through computer networks, including the Internet. It distinguishes between e-commerce and e-business, and describes different models of e-commerce including business-to-business, business-to-consumer, and consumer-to-consumer. It also covers benefits of e-commerce such as global reach, cost reduction and improved customer relations, as well as some limitations.
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