KPIs provide metrics that show whether processes and controls are meeting performance targets. CRISC explains that KPIs help identify how efficiently controls or processes are operating. They provide a leading view of performance, enabling early identification of inefficiencies that may lead to increased risk. KPIs do not measure cost effectiveness, ROI, or changes in risk tolerance-those belong to financial or strategic measurement systems. Control efficiency aligns directly with KPI use because KPIs measure operational results against objectives. Reference: CRISC Review Manual - Risk and Control Monitoring (KPI purpose).