This document provides an overview of electronic commerce (e-commerce). It defines e-commerce and discusses its various categories and frameworks. The document outlines 10 learning objectives related to understanding e-commerce models, transactions, Web 2.0 applications, the digital world/economy, e-commerce business models, and the benefits, limitations and impacts of e-commerce. It also discusses legal and ethical issues in e-commerce such as privacy, intellectual property, and computer crimes.