Electronic commerce , commonly known as e-commerce or eCommerce, consists of the buying and selling of products or services over electronic systems such as the Internet and other computer networks. The amount of trade conducted electronically has grown extraordinarily since the spread of the Internet. A wide variety of commerce is conducted in this way, spurring and drawing on innovations in electronic funds transfer, supply chain management, Internet marketing, online transaction processing, electronic data interchange (EDI), inventory management systems, and automated data collection systems. Modern electronic commerce typically uses the World Wide Web at least at some point in the transaction's lifecycle, although it can encompass a wider range of technologies such as e-mail as well.
Contemporary electronic commerce involves everything from ordering "digital" content for immediate online consumption, to ordering conventional goods and services, to "meta" services to facilitate other types of electronic commerce.
On the consumer level, electronic commerce is mostly conducted on the World Wide Web. An individual can go online to purchase anything from books, grocery to expensive items like real estate. Another example will be online banking like online bill payments, buying stocks, transferring funds from one account to another, and initiating wire payment to another country. All these activities can be done with a few keystrokes on the keyboard.