Selling a product or service on line?

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 with widespread Internet usage. 

A large percentage of electronic commerce is conducted entirely electronically for virtual items such as access to premium content on a website, but most electronic commerce involves the transportation of physical items in some way.

Online retailers are sometimes known as e-tailers, and almost all big retailers have electronic commerce presence on the World Wide Web.