E-commerce is defined as the online transaction of business, connecting a vendor or seller and a buyer. Various products and services are being offered, but it's key cornerstones is that the interactions, deal sign-ups and the payment processes happen online. According to www.searchcio.techtarget.com, e-commerce can be divided into the following:

E-tailing or "virtual storefronts" on Web sites with online catalogs

Use of demographic information through Web contacts

Electronic Data Interchange (EDI)

Business-to-business buying and trading (B2B)

A primary facet of e-commerce is online shopping. Online shopping was actually started by Michael Aldrich in 1979. E-commerce has made a foothold in the today's world. Almost in each corner of the globe, people have recognized the increasing significance of e-commerce. It led to the development of electronic funds transfer, supply chain management, internet marketing, online transaction processing, electronic data interchange (EDI), inventory management systems, and automated data collection systems.

1. Electronic funds transfer - is the computer-based systems that are employed to execute electronic financial transactions.

2. Supply chain management -