IT and Competitive Difference

The article Investing in the IT That Makes a Competitive Difference by Andrew McAfee and Erik Brynjolfsson investigates a relationship between investments of a company in IT infrastructure, Information Systems and the competitive advantage thus achieved. There exist a strong relationship between ICT investments and the competitiveness of a firm since the advent of internet in 1990. This relationship is explored using three major indicators of competitiveness concentration of market share, turbulence of top ranking among competitors, and performance spread being the greater difference of performance among companies based on their fixed investments in ICT.