Editorial preview
Field Note 03 / Product-Market Fit
Product-Market Fit Is a Sequence of Proof
Growth becomes safer when value, payment and continued use tell the same story.
Product-market fit is often discussed as a moment. Teams have to manage it as a sequence.
No single survey, revenue number or enthusiastic customer proves the whole case. The evidence becomes useful when the team can explain who received value, why they paid and what brought them back.
What you will learn
How to read PMF as a connected evidence system
- Why value experience, monetization and retention answer different questions.
- How cohort evidence prevents averages from hiding weak fit.
- Why PMF must be measured for a defined Early Customer Profile.
Each signal strengthens the next; none replaces the others.
01 / Value
First, prove the customer reaches value
A product can be technically complete and still make value difficult to reach. The first question is whether the chosen customer completes the meaningful job and experiences the promised gain.
Leah Tharin's PMF framing, presented in Voje's book, separates proof of value experience from proof of monetization and proof of the value proposition. This prevents a team from treating acquisition as evidence that the product works.
Look beyond activation theatre
- Define the behaviour that represents value received.
- Measure it for the intended customer cohort.
- Investigate where the journey breaks before adding more traffic.
02 / Monetization
Then, prove the value survives a payment decision
Interest and willingness to pay are different signals. Payment tests whether the problem is important enough to displace another use of money, time or organisational attention.
This proof should be interpreted with the buying context. A customer may value the product and still face procurement friction, unclear ownership or a price metric that does not match how benefit grows.
A payment is not merely revenue. It is evidence about perceived value, urgency and the path to adoption.
03 / Retention
Finally, prove value continues after novelty fades
Retention reveals whether the product becomes part of the customer's working reality. Brian Balfour's retention-curve idea distinguishes a cohort that stabilises from one that keeps decaying toward zero.
Sean Ellis's PMF survey adds a perception signal: how customers would feel if the product disappeared. Its well-known threshold is useful only when the surveyed group is the intended customer and behavioural evidence supports the answer.
Program leadership connects these signals. The team needs an owner for the gap, a hypothesis about its cause and a review point where evidence can change the roadmap.
Closing thought
Fit is earned in the customer journey
Before scaling acquisition, make the proof chain visible. Know who reaches value, who pays, who stays and who brings the value into another conversation.