The document discusses Key Performance Indicators (KPIs), which are quantifiable measures used to evaluate factors that are crucial to the success of an organization. KPIs help measure performance against goals. The document outlines what makes a good KPI, such as being business-aligned, actionable, realistic and measurable. It also discusses how to develop KPIs using the SMART framework and provides examples of KPIs for different business functions like IT, marketing, customer service, sales and finance.