E-business refers to conducting business operations over the Internet. It involves using Internet technologies internally and externally to facilitate day-to-day business processes. There are different types of e-business including business-to-business (B2B), business-to-consumers (B2C), consumers-to-consumers (C2C), and business-to-administration (B2A). E-business allows companies to reduce costs, improve customer service, and increase communication and sales. However, it also faces disadvantages such as less security, less privacy for customer data, and the inability to physically examine products before purchasing.