86 minutes of paid-UGC alphaHector Serrano · Wispr Flow
ChatGPT Should Have Killed His AI SaaS. Instead, He's Nearing $10MAlon Talmor · Mosaic AI
Databricks' Ali Ghodsi Never Wanted to Be CEO. Now He's Among the BestAli Ghodsi · DatabricksGusto's Path to Product-Market Fit — How Listening to Customers Built a $9.6B Company
Gusto co-founder Tomer London looks back at how he and his co-founders found product-market fit for what was then ZenPayroll, starting with cold calls to small business owners. London argues that founders should seek rejection, watch for strong emotional reactions, and let customer conversations decide who they serve and what they build next.
We link to the original and never republish it. All credit to Tomer London.
Key takeaways
- London says it is your job to speak with strangers, and that you should go into customer calls seeking rejection, because that is where the learning comes from.
- Polite and nice reactions tell you little. London looks for strong positive or strong negative reactions, since about 90% of conversations sit in the middle and carry little data.
- When about two in ten small business owners were instantly sold, London's next step was to work out who those two were, so that picking ten of that kind would give ten out of ten.
- Gusto first served only California companies with salaried employees, so that every customer would love the product, and it aimed for an NPS of 85 or higher to drive word-of-mouth.
- London validated the benefits product by calling twenty existing customers, pitching it with a price and asking them to sign up. Seventeen said yes.
Who it's for
Early-stage founders who are still doing customer discovery and trying to tell real demand from polite interest.
Why it's worth your time
It gives a practical, first-person method for judging demand through emotional reactions and segment focus, and it shows how customer conversations kept steering Gusto's roadmap from payroll to benefits to compliance.
More on product-market fit
All 69 →
The best founder writing, in your inbox
Hand-picked essays, talks and decks from the founders who built the companies. Free, and you can unsubscribe any time.