This document discusses electronic commerce (e-commerce). It defines e-commerce as the buying and selling of goods and services over electronic systems like the internet. The document outlines the history of e-commerce from 1979 to present day. It describes the process of online shopping and payment. It also discusses different types of e-commerce models including business-to-business, business-to-consumer, and consumer-to-consumer. Finally, it covers some of the pros and cons of e-commerce as well as the future growth prospects of e-commerce in India.