---
type: "term"
title: "KPI (Key Performance Indicator)"
description: "A measurable value demonstrating the outcome and performance of security processes in reaching security objectives."
resource: "tlctc:term:kpi-key-performance-indicator"
tags:
  - "glossary"
---
# KPI (Key Performance Indicator)

A measurable value demonstrating the outcome and performance of security processes in reaching security objectives. KPIs must be time-based and reflect effectiveness over time. Example: "Average time to restore critical services to full operation within a 4-hour window." In TLCTC, the Detection Coverage Score (DCS) serves as a strategic detection-timing KPI (see its entry for scope caveats).
