Definition (canonical)
KPI (key performance indicators) are metrics elevated to steering duty: each has a target, an owner, a review rhythm — and decisions change when it moves. The word "key" is the design constraint — a dashboard of forty KPIs is a dashboard of zero.
What separates a KPI from a metric
Your systems produce hundreds of metrics; KPI status requires four properties: linked to strategy (it measures something the plan depends on), influenceable (the owner has levers, or it's a weather report), timely (arrives fast enough to act within the cycle), owned (one accountable name). The classic sins: vanity KPIs (registered users, page views — up and to the right, decision-free), orphan KPIs nobody owns, and lagging-only stacks that report history instead of steering the present.
Leading vs lagging — build the causal pair
Lagging indicators state outcomes (quarterly revenue, churn realized); leading indicators predict them while there's time to act (qualified pipeline coverage, activation rate, usage-drop alerts). A functional KPI stack pairs them along the causal chain: pipeline coverage → win rate → revenue; onboarding completion → retention → NRR. When a lagging KPI misses, the paired leading ones tell you WHERE the machine broke — that diagnostic chain is the whole point, and it's what a bare revenue target can never give you.
Anti-gaming design and a working SME stack
Goodhart's law is undefeated: any measure made a target gets gamed. Defenses: pair metrics with their countermeasures (speed with quality, volume with margin, NPS with profitability), rotate audits of definitions, and reward trend ownership over point targets where possible. A minimal honest stack for a typical SME: cash runway (cash flow), revenue vs plan, gross margin, one demand-side leading KPI (pipeline or traffic-to-lead), one delivery KPI (on-time, quality), one customer KPI (retention or NPS) — six numbers, weekly rhythm, named owners; add a north star if strategy needs a unifying flag.
FAQ
How many KPIs should a company have? Per team: 3–5; per company scoreboard: fits on one page. Beyond that you've built a metrics museum.
How often to review? Weekly for operational KPIs, monthly for strategic, quarterly to revisit whether these are still the right KPIs at all.
Targets: stretch or realistic? Committed targets realistic, ambitions labeled separately — mixing them teaches teams that all numbers are negotiable.
Related: North Star Metric · NPS · Unit Economics · Cash Flow Reviewed: 2026-07-15 · Sources: performance management canon