The Internet search engine market has seen a proliferation of entrants over the last few years. While Yahoo! was the early market leader, there has been entry by both lower quality engines and higher quality ones (such as Google). Prior work on quality differentiation requires that low quality...

We develop a model of vertical differentiation in the Internet search engine market. A key property of the model is that users who try out one engine may be dissatisfied with the results, and consult another engine in the same session. This residual demand allows lower quality engines to survive...

An extensive literature has studied the benefits for a firm to be the first to invest in innovative technologies such as Information Technologies (ITs). However, investment in innovative technologies often faces high levels of uncertainty. How would such uncertainty affect a pioneering firm's...

Network caches are the storage centers in the supply chain for content delivery - the digital equivalent of warehouses. Operated by access networks and other operators, they provide benefits to content publishers in the forms of bandwidth cost reduction, response time improvement, and handling...

Firms constantly invest in improving product quality with innovative technologies. However, the out-come of research into innovative technology can be inconsistent. This paper investigates how a firm should choose between a mature technology and an innovative technology in upgrading an existing...