OMTM (One Metric That Matters)
Why it matters
Focus is scarce. Spread across twenty priorities, a team makes small progress on all of them and a breakthrough on none. When each team optimises a different number, the gains do not add up to company growth. Naming one metric forces the useful argument about which number really drives value, and it exposes vanity metrics that do not correlate with revenue.
How to apply it
- Identify the current bottleneck first, then pick the metric that measures it.
- Prefer a rate or ratio to a running total, because ratios show change and totals only grow.
- Choose a number the team believes it can move within weeks, not years.
- Test every proposed project against one question: does it move this number?
- Keep a few guardrail metrics beside it, so the main number cannot be raised at the cost of quality.
- Retire it when the bottleneck moves, and name the next one deliberately.
What it is
The One Metric That Matters comes from the book Lean Analytics by Alistair Croll and Benjamin Yoskovitz. The idea is to pick one number that tells the business whether it is solving its most important problem right now, and to track other numbers only in support of it.
The number changes with stage. An early product might focus on how many new users come back in a second week. Once that works, the focus might move to revenue per customer or to acquisition cost. A consultancy with feast-or-famine leads could choose qualified leads per week.
Common mistakes
- Picking a number that is easy to inflate, such as raw sign-ups, and then watching quality fall.
- Keeping the same metric for years after the problem has changed.
- Confusing it with a North Star metric, which is a longer-term measure of customer value.
