This document summarizes a presentation on e-commerce given to a class. It discusses what e-commerce is, its impact on markets and the economy, how it relates to e-business, the benefits it provides, its various forms and drivers. It also covers phases of e-commerce transactions, security threats, and how e-commerce can be classified based on the type of transactions between consumers, businesses, governments and peers. The presentation was given by a group of 6 students to their class on marketing and retail management.