This document provides an overview of e-commerce. It discusses that e-commerce involves buying and selling goods online and traces the origins of e-commerce back to the 1960s. It then describes the rise of companies like eBay and Amazon in the 1990s that revolutionized online retail. There are different types of e-commerce models including business to business, business to consumer, consumer to business, and consumer to consumer. The document also outlines the scope and growth of e-commerce in India, as well as advantages such as expanded markets and cheaper goods for customers, and disadvantages like security and privacy issues.