E-commerce refers to digitally enabled commercial transactions between organizations and individuals, primarily focusing on facilitating order fulfillment. It differs from e-business in that e-business may also involve customer service and product development. The document outlines eight unique features of e-commerce technology, types of e-commerce including B2C, B2B, C2C and M-commerce, and limitations to the growth of B2C e-commerce such as expensive technology requirements and cultural attraction to physical markets. It also describes three eras of e-commerce and disciplines concerned with e-commerce such as information systems, economics, and marketing.