This document provides an overview of e-commerce, including definitions, types of e-commerce (B2B, B2C, C2C, B2G, G2C, G2B), objectives, outcomes, and limitations. E-commerce is defined as purchasing, selling, and exchanging goods and services over computer networks and the internet. The main types are business-to-business, business-to-consumer, and consumer-to-consumer. The objectives of e-commerce include making online buying easy, providing reliability and security, and giving customers a 360-degree view of products. Potential outcomes are easier and faster access to information, lower costs and more global market access. The document also discusses