Three Customer Concentrations

At one company, 48% of revenue came from a single logo, and the board discussed it at every meeting. The number was real and the board was right to watch it. It also wasn't the thing that could kill the company. The two concentrations that do never showed up on the report.

The first is industry concentration. On paper the customer base looked diversified: sixty distinct logos, none above five percent of revenue on its own. Run by logo, it looked healthy. Run by industry, the same base was sixty percent retail and twenty-five percent restaurant — two adjacent verticals that move together in a downturn. One bad consumer quarter pauses spending across both at once. A base that reads as diversified by logo is, in operating terms, a one-bet portfolio.

This shows up in the standard report only if someone thought to add the industry column. Most boards never see it. Most CFOs never surface it, because the existing report runs by logo and the report that would catch it is the one nobody was asked to build. It is the same blind spot behind a concentration that never gets named out loud: the exposure exists whether or not anyone reports it.

The second is use-case concentration. The base spans multiple industries, and customers use the product for different jobs — billing, reporting, onboarding, vendor management. Run by customer, the diversification looks fine. Run by primary workflow, eighty percent of the base uses the product for one thing and the other twenty percent are tertiary. A single shift in how customers run that one workflow, driven by a regulatory change or a competitor launch, erodes the value proposition across most of the base at the same time.

Use-case concentration is the hardest of the three to see, because it needs the customer success team to know which workflow each customer is running. Dashboards capture activation events and feature usage, but they rarely roll up to which workflow this customer is running. That knowledge lives in CSM heads, undocumented, and the exposure stays invisible until the workflow shifts. The cost of not knowing looks a lot like what your loudest customer quietly costs you: real, ongoing, and absent from every chart.

The cut is the same for all three. Run the base through three concentration views every quarter: by customer, by industry, by primary use case. Report all three. The logo view produces the conversation the board is already having. The other two produce the conversations it hasn't thought to have yet, against exposures larger than the one it is watching and harder to unwind.

Companies that survive a vertical downturn or a workflow shift usually tracked the exposure early and diversified on purpose. Companies that get blindsided usually tracked the logo, called it done, and never looked at the two cuts that mattered more.