This document provides an overview of e-commerce, including: - A definition of e-commerce as the integration of technologies to allow individuals and organizations to exchange information related to the sale of goods and services online. - Statistics on internet and online shopping usage, showing a majority of US adults now regularly use the internet and over half have made online purchases. - Descriptions of the benefits and risks of e-commerce for both consumers and businesses. - Examples of different e-commerce business models like B2C, B2B, and C2C. - Data on the rapid growth of e-commerce retail sales and predictions it will reach $250 billion by 2014.