• E-commerce (electronic commerce or EC) is the buying and selling of goods and services on the Internet, especially the World Wide Web. In practice, this term and a newer term, e-business, are often used interchangably. For online retail selling, the term e-tailing is sometimes used.

Ecommerce can be divided into:-

• The gathering and use of demographic data through Web contacts.
•  Electronic Data Interchange (EDI), the business-to-business exchange of data.
•  E-mail and fax and their use as media for reaching prospects and established customers.
•  Business-to-business buying and selling.
•  E-tailing or "virtual storefronts" on Web sites with online catalogs, sometimes gathered into a "virtual mall"
•  The security of business transactions.

E-commerce is also conducted through the more limited electronic forms of communication called e-mail, facsimile or fax, and the emerging use of telephone calls over the Internet. Most of this is business-to-business, with some companies attempting to use e-mail and fax for unsolicited ads (usually viewed as online junk mail or spam) to consumers and other business prospects. An increasing number of business Web sites offer e-mail newsletters for subscribers. A new trend is opt-in e-mail in which Web users voluntarily sign up to receive e-mail, usually sponsored or containing ads, about product categories or other subjects they are interested in.

Net Banking

The performance  of banking activities via the Internet. Online banking is also known as "Internet banking" or "Web banking." A good online bank will offer customers just about every service traditionally available through a local branch, including accepting deposits (which is done online or through the mail), paying interest on savings and providing an online bill payment system.