Abstract
In 2006, the total e-commerce spending by customers and businesses would reach and even surpass five trillion Dollars according to e-marketer (2004). This astonishing number confirms that e-commerce and e-business must be taken into consideration now by firms in order to be competitive. Even if e-commerce and e-business seem to be rather new phenomena for customers, that is to say clients have not been used to buy online for a long time; the Internet has already a long history. In the late sixties (1969), the American department of defence created ARPANET (Advanced Research Projects Agency Network) group in order to install secure networks among computers. In 1973, Great Britain is connected to ARPANET. Then in 1984, JANET: joint academic network, is installed in United Kingdom. But the big step is the introduction in 1990 of the World Wide Web, which is considered to be one of the most significant contributions to business activity. By the end of 1992, the Internet and the World Wide Web have already more than one million users over the world.
