E-commerce, short for electronic commerce, refers to the buying and selling of goods and services over the internet. It involves the online transactions and exchange of products, services, or information between businesses, individuals, or organizations. E-commerce allows customers to browse, select, and purchase products or services from the comfort of their own devices, such as computers, smartphones, or tablets. It eliminates the need for physical stores or face-to-face interactions, as the entire transaction can be conducted electronically. E-commerce encompasses various models, including business-to-consumer (B2C), business-to-business (B2B), consumer-to-consumer (C2C), and more recently, mobile commerce (m-commerce). It has revolutionized the way business is conducted, providing convenience, global reach, and a wide range of options for consumers and businesses alike.