The Two Numbers That Keep a Marketing Team Honest
Walk into most marketing meetings and you’ll find forty metrics and no answer. Everyone arrives with a dashboard that flatters their own work — the paid team has cost-per-click, the content team has traffic, the email team has open rates — and the meeting ends with everyone technically up and the business unmoved. The fix isn’t more measurement. It’s two numbers, chosen deliberately.
The North Star Metric: one number for the whole company
The North Star Metric (a concept popularized by Sean Ellis) exists to point every nose in the same direction. A proper NSM has to clear three bars: it leads to revenue, it reflects real value delivered to the customer, and it measures progress you can act on. Meta’s is daily active users — engagement that simultaneously signals customer value and ad inventory. Yours might be weekly orders, active subscriptions, or booked projects.
The logic is simple: if the number that grows the company is the same number that means customers are getting value, then growing it can’t hollow out the business. That’s the safeguard vanity metrics never provide. Traffic can grow while revenue falls. Followers can grow while nobody buys. A well-chosen NSM can’t be gamed without actually serving customers.
The One Metric That Matters: one number per initiative
The NSM steers the company; it’s too broad to steer a campaign. For that, use what Alistair Croll called the One Metric That Matters — a single, temporary, tactical focus chosen for the current bottleneck. It should be easy to understand, comparable across time periods, and preferably a rate rather than a raw count, because rates expose truth that totals hide.
Here’s how they work together in practice. Say the NSM is app downloads, supported by cost per download. The team could chase cheaper clicks — lower CPMs look efficient on a slide — but cheap, low-intent traffic quietly worsens the number that matters. So for one quarter, the OMTM becomes download conversion rate: put better-qualified people on the page and convert more of them. When that bottleneck clears, the OMTM changes. The North Star doesn’t.
Why owners should care
Because this structure is how you audit a marketing function without becoming a marketer. Ask two questions in any review: What’s our North Star, and what’s this quarter’s one metric? A team that answers instantly, with the same answer from every seat, is running an operation. A team that hedges — “well, it depends which channel” — is running activities. The forty-metric dashboard isn’t rigor. It’s camouflage. Two numbers, defended weekly, is what accountability actually looks like.
Baron Belalov is a fractional CMO working with growth-stage and established companies globally.