Much has been written in the past few years on Customer Satisfaction measurement models in order to study the relationship between satisfaction and market share, and the impact of customer switching barriers (Fornell 1992) in terms of customer satisfaction Index (CSI). A Customer Satisfaction Index quantifies the level of profitable satisfaction of a particular customer base and specifies the impact of that satisfaction on the chosen measure(s) of economic performance. Index can be generated for specific businesses or market segments or "rolled-up" into corporate or divisional measures of performance. The index is used to monitor performance improvement and to identify differences between markets or businesses. The CSI score provides a baseline for determining whether the marketplace is becoming more or less satisfied with the quality of products or services provided by individual industry or company.
