The document provides an overview of the history and development of e-commerce. It discusses how the first online transactions occurred in the mid-1990s with companies like Pizza Hut offering online ordering. Major online retailers and auction sites like Amazon and eBay launched in the 1990s as well. The document then discusses how eBay works, charging sellers commission fees, and how it acquired PayPal to allow online payments. It concludes by listing some popular websites that use e-commerce models today.