The Internet is growing at an incredible speed, facilitating rapid innovation and the development of new revenue models. New technologies such as cable modems and Digital Subscriber Line (DSL) are continually increasing access speeds to accommodate the growing demand for more sophisticated, bandwidth-intensive, interactive content. As first-time users flock to get connected, the growing numbers can place considerable demand on a company’s Web servers. At the same time, Web site performance and reliability have become two of the most important determinants of online user satisfaction and customer retention, making an increasingly significant impact on the bottom line.