The document discusses the growth of e-commerce and various e-commerce business models. It describes the origins and growth of e-commerce from the 1970s to today. E-commerce evolved from EDI and EFT technologies in the 1970s to the dot-com boom and bust in the late 1990s. Major e-commerce companies like Amazon and eBay emerged in the mid-1990s and helped popularize online shopping. The document also outlines different types of e-commerce models including business-to-consumer, business-to-business, consumer-to-consumer, and others; and describes common revenue models and key elements of successful e-commerce business models.