E-commerce, short for electronic commerce, refers to the buying and selling of goods and services over an electronic network, primarily the internet. It involves the use of electronic platforms, such as websites, mobile applications, and social media, to conduct transactions between businesses and consumers or between businesses. E-commerce has revolutionized the way businesses operate and has created new opportunities for entrepreneurs and consumers alike.

E-commerce can be conducted over computers, tablets, smartphones, and other smart devices. There are three main types of e-commerce: online retailing, electronic markets, and online auctions. E-commerce platforms range in size from ones for small businesses to large enterprises, and include online marketplaces such as Amazon and eBay.

E-commerce began in the 1960s, when businesses started using EDI to share business documents with other companies. In the 1990s, the rise of eBay and Amazon revolutionized the e-commerce industry, and consumers can now buy many items online from e-commerce-only vendors, also called e-tailers.

E-commerce offers several benefits, including convenience, efficiency, and the ability to reach a global audience. However, it also has some disadvantages, such as the lack of personal interaction and the potential for fraud.

In summary, e-commerce is the buying and selling of goods and services over an electronic network, primarily the internet, and involves the use of electronic platforms to conduct transactions between businesses and consumers or between businesses.