This document discusses how companies can gain a competitive advantage through the use of information systems and technology. It provides examples of both successful and unsuccessful uses of IS/IT. Specifically, it explains that IS/IT can help lower costs, differentiate products/services, and foster innovation. However, some companies have failed to keep up with new technologies, causing their competitive advantages to diminish over time, like what happened to Nokia. Both internal factors, like strengths/weaknesses, and external factors, such as opportunities/threats, can influence the success or failure of a company's IS/IT strategies.