From Microsoft TechNet:
In business terminology, a Key Performance Indicator (KPI) is a quantifiable measurement for gauging business success. A KPI is frequently evaluated over time. For example, the sales department of an organization may use monthly gross profit as a KPI, but the human resources department of the same organization may use quarterly employee turnover. Each is an example of a KPI. Business executives frequently consume KPIs that are grouped together in a business scorecard to obtain a quick and accurate historical summary of business success.
Classes
There is a Kpi class in the .NET framework.
Resources
- Microsoft TechNet: SQL Server Analysis Services - Multidimensional Data
- Microsoft TechNet: Key Performance Indicators (KPIs)