North Star Metric

Activate when: teams are fighting over which metric to optimize; someone says 'north star metric,' 'NSM,' 'OMTM,' or 'one metric that matters'; a dashboard has 30+ metrics with no clear priority; a leading indicator is needed that predicts revenue before it moves; or someone asks 'what should we optimize?' Do NOT activate when: the product has no customers yet (no value to measure — use lean-startup instead); a single team in a mature business needs execution KPIs rather than cross-team alignment.

Overview

The North Star Metric (NSM) is the single metric that most directly measures value delivered to customers and predicts revenue over time. Popularized by Sean Ellis and Amplitude. Revenue is the goal; the NSM is the leading indicator that predicts it early enough to act — picking revenue itself produces a lagging dashboard, not a steering wheel.

Compose: aarrr-pirate-metrics instruments the full funnel; NSM elevates one funnel metric to cross-team primacy. first-principles clarifies what value the product actually delivers. pmf-crossing-the-chasm — the NSM is typically an Activation- or Retention-stage metric.

When to Use

Use when: teams are optimizing conflicting metrics; dashboard has 30+ metrics with no priority; a leading indicator of revenue is needed; someone says "NSM," "OMTM," "what should we optimize," or "we measure too many things."

Do NOT use when: product has no customers (pre-PMF → use lean-startup); single-team execution in a mature business; genuinely conflicting strategic objectives (the strategy needs work, not a metric).

Coaching Novices (Adaptive Front Door)

• Engine mode: user has a concrete case → run The Process directly.
• Coach mode: user is unfamiliar or has no concrete case → guide step by step.

In Coach mode, respond one step at a time. Each [WAIT] is a hard stop — output only that step's question, then stop.

1. One-line what-it-is: the NSM is the single metric that best captures the value your product delivers to customers — when it grows, revenue grows behind it.
2. Check fit against When to Use / When NOT to use. No customers → redirect to lean-startup. Single mature team → wrong scope.
3. Elicit the product's core value in customer units (time saved, problem solved) — not the product feature.

[WAIT — do not advance until user responds]

4. Walk: value → metric candidate → 3-criteria check → test against company strategy → pick. Pause at each.

[WAIT — do not advance until user responds]

5. Close by naming the chosen NSM + the supporting metrics it should not be confused with. One number on the wall; a list of "useful but not the NSM" metrics.

[WAIT — do not advance until user responds]

The Process

Run the NSM Audit:

1. Articulate customer value in customer units — the customer's outcome, not your product's mechanism.
2. Generate 3–5 NSM candidates — each proxies that value as a measurable metric.
3. Apply the 3 criteria (Amplitude §2): (a) Customer value? (b) Strategy fit? (c) Leads revenue? All three required; two-of-three = supporting metric only.
4. Time-shifted correlation — does the candidate lead revenue over 6–12 months?
5. Perverse-incentive stress test — could the team game this in a way that hurts customers?
6. Pick one. Put it on the wall. Explicitly name supporting metrics as supporting, not NSMs.
7. Re-evaluate quarterly — early stage → engagement; growth → retention; scale → revenue-adjacent.

Output: the NSM Audit

text

NSM Audit: <product>
Customer value: "<customer experiences ___, measured in ___>"
Candidates: (1) <metric> (2) <metric> (3) <metric>
3-Criteria check: | Candidate | Value? | Strategy? | Leads rev? | Verdict |
Time-shifted correlation lead: <weeks/months>
Perverse-incentive risk: <what could go wrong> | Mitigation: <guardrail>
Chosen NSM: <NSM> — measured as <operational def>, reported <weekly/monthly>
Supporting (NOT NSM): <metric> — <why supporting>
Re-evaluation date: <next quarter>

→ Method in Action: Facebook's "Seven Friends in Ten Days" (2007–2010)

NSM Selection Packs

Typical NSMs by domain: content platforms → minutes streamed per active user; B2B SaaS → active value moments per account (deals closed, tickets resolved); marketplaces → successful transactions; freemium consumer apps → core action completions. Adding a pack for your domain (typical NSMs, value-to-revenue mechanism, common mis-picks) is the easiest way to contribute.

Applying It Well

• NSM is a leading indicator, not the goal. Revenue is the goal; NSM predicts it early enough to act.
• NSM measures customer value, not company convenience. Easy-to-measure ≠ right NSM.
• One metric only. Multiple "north stars" = strategy conflict, not a metric problem.
• Stress-test for perverse incentives. The team will optimize whatever the NSM measures.
• NSM evolves. Pre-commit to quarterly review.

→ Primary sources: references/sources.md

Common Rationalizations

[D] = designed upfront | [O] = observed in real use. [O] entries are more valuable.

Fake move	Reality
[D] Revenue as the NSM	Revenue is the goal, not the leading indicator — lagging dashboard, not a steering wheel.
[D] Multiple "north stars"	Multiple north stars defeat cross-team alignment; if you genuinely need multiple, you have a strategy conflict.
[D] Vanity metric promoted to NSM	Page views, signups, app downloads move with marketing spend; they don't predict revenue.
[D] NSM fails perverse-incentive test	If ruthless optimization of this metric hurts customers, the NSM is mis-chosen. Stress-test first.
[D] Treating the NSM as eternal	Stage 1 → engagement; growth → retention; scale → revenue-adjacent. Re-evaluate quarterly.
[D] No operational definition	"Engagement" is not an NSM. "Users completing ≥3 core actions per week" is. Specify the event.
[D] NSM as marketing/PR claim	"Making the world better" is positioning, not a metric. NSM must be a number that goes up or down.
→ Add [O] entries here after each real use — paste the actual failure pattern	What went wrong and why

Red Flags

• The NSM is revenue itself (lagging indicator)
• The team has 3+ "north star" candidates and no decision among them
• The NSM is a vanity metric (signups, page views, app downloads)
• No perverse-incentive stress test was done
• No time-shifted correlation with revenue has been examined
• The NSM has no operational definition (e.g., "engagement" without specifying what counts)
• The same NSM has been in place for 2+ years across very different business stages with no review

Verification

• The customer value is articulated in customer units (not product mechanism)
• 3–5 candidate metrics were generated
• Each candidate passes all three criteria (customer value + strategy + leading indicator)
• Time-shifted correlation with revenue is examined
• Perverse-incentive stress test is done with named mitigations
• Exactly one NSM is chosen with operational definition
• Supporting metrics are explicitly named as supporting, not as NSMs
• Quarterly re-evaluation is scheduled

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