Electronic Commerce commanly known as electronic marketing. It consists of the buying and selling of products or services over electronic systems such as the Internet and other computer networks. Today the largest electronic commerce is Business-to-Business(B2B). Business involved in B2B sell their goods to other businesses. B2B can be open to all interested parties (e.g. commodity exchange) or limited to specific, pre-qulified participants.

The amount of trade conducted electronically has grown extraordinarily since the spread of the Internet. A wide variety of e-commerce is conducted by spurring anddrawing on innovations in electronid funds transfer, supply chain management, internet marketting, online transaction processing, electronic data interchange(EDI), inventory management systems, and automated data collection systems. Electronic commerce is generally considered to be the sales aspect of e-business. It also consists of the exchange of data to facilitate the financing and payment aspects of the business transactions. As world wide website having functionality of email the modern e-commerce used this.

osCommerce has attracted a large growing e-commerce community that consists of store owners and developers who support each other and extend osCommerce Online Merchant with add-ons being contributed on a daily basis. osCommerce is the leading Open Source online shop e-commerce solution and released under GNU (General Public License).

A small 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 is known as e-tailers and online retail is known as e-tail. Almost big retailers have electronic commerce presence on the World Wide Web.

Orignal e-commerce applications were based on getting needed data to the consumer. In other words the major concern was integrating current catalogues and data into an online format from which consumers could shop. From an electronic aspect there have been several advantages of electronic commerce. In particular consumers have more suppliers, sometimes including foreign suppliers. For finding lowest price we can search on Internet. Now a days market becomes a larger and competition also get increased. This increased competition can bring down prices for consumers and other businesses. Further, the increase in information and choice available can help increase the efficiency of a suppl and demand equilibrium.