Information technology has become the largest building block of capital investment for companies in the world. In 2005, United States companies alone spent nearly $1.8 trillion on IT and telecommunications equipment and software.Today’s service industries – finance, real estate, insurance, travel, medical, and education – could not operate without IT.IT is one of the most important tools along with innovations in organization and management.IT plays a vital role in increasing the productivity of firms. If firms want to achieve a strategic advantage over their competitors, to differentiate themselves from their competitors, IT is one avenue for achieving such advantage along with changes in business practices and management.