Summarizes "what we know" and "what we still need to know" about service quality: how to define and measure it and how to improve service performance. Discusses the link between service quality, customer loyalty, and profitability, and the challenge of delivering service quality on the Internet.
Valarie A. Zeithaml is the Roy and Alice H. Richards Bicentennial Professor and Associate Dean at the Kenan-Flagler Business School, University of North Carolina, Chapel Hill.
A. Parasuraman is a Professor and holder of the James W. McLamore Chair in Marketing at the University of Miami.