Narrow in four passes. (1) Start with the broad category your idea sits in. (2) Filter by buyer behavior: who currently has this problem and is doing something about it? (3) Filter by reach: who can you actually contact via the channels you have today? (4) Filter by willingness to pay: who has budget authority and a price point that clears your unit economics? The output is a specific buyer profile you could name 10 people who match. If you can't, you haven't narrowed enough.
The fast version
Narrow in four passes. Each pass cuts your audience by an order of magnitude until you have a buyer specific enough to name 10 actual people.
| Pass | Filter | Cuts ~10x |
|---|---|---|
| 1 | Category | ”All knowledge workers” → “Software founders” |
| 2 | Behavior | Who has this problem and is doing something about it today |
| 3 | Reach | Who can you contact via your year-1 channels |
| 4 | Willingness to pay | Who has budget authority + your price clears their threshold |
Output: a buyer profile you could write down 10 names of real people who match. If you can’t write the names, you haven’t narrowed enough.
Why narrow first
The instinct is to pick a broad category to maximize TAM. The problem: messaging, channels, pricing, and onboarding all have to fit a specific buyer. Broad targeting forces all four of those to be generic, and generic loses to specific.
The pattern across successful startups:
- Slack started with internal tech teams (not “all knowledge workers”)
- Stripe started with developers (not “all businesses that need payments”)
- Notion started with personal productivity / small teams (not “all collaboration software users”)
- Figma started with product designers at tech companies (not “all designers”)
Each expanded from a narrow beachhead. None started broad and narrowed. Narrow is how you get traction; broad is what you become at scale.
How to run each pass
Pass 1: category. Start with the obvious one. “Project management software.” “Email tools.” “Design software.” This is the broadest version. You’ll cut from here.
Pass 2: behavior. Who currently has this problem AND is doing something about it? “People who manage projects” is too broad. “People who currently use Asana / Trello / Linear and complain about [specific thing] in public” is narrower and more useful. Behavioral filters are stronger than demographic ones.
Pass 3: reach. Who can you contact in year 1 with the channels you have? If you’re an indie hacker on Twitter, your effective reach is people who hang out on Twitter, indie hacker communities, and your warm LinkedIn network. If your buyer is enterprise IT in healthcare, you have a reach problem; either fix the channel (rare for early-stage solo) or pick a different buyer.
Pass 4: willingness to pay. Who has budget authority and a willingness to pay at your candidate price? A persona that loves your product but has to ask their boss for $19/mo is a longer sales cycle than a persona that can charge it on a personal card. For founder products: solo / individual buyer authority is gold.
What the output looks like
Bad: “Founders.” (Pass 1, no further narrowing.)
Better: “B2B SaaS founders running pre-seed startups in Europe who’ve raised but haven’t shipped, currently using a mix of ChatGPT and Notion to figure out what to build, frustrated that neither produces a defensible answer.” (All four passes.)
The second version:
- Names a category (B2B SaaS) and stage (pre-seed)
- Names a behavior (using ChatGPT + Notion, frustrated)
- Implies reach (Twitter, IndieHackers, niche European founder communities)
- Implies willingness to pay (raised = budget exists)
You can write 10 names of people who fit the second version. You can’t write 10 names of “founders.”
How ShipFit handles this
ShipFit’s stage 2 (Who Pays?) takes you through the four passes. The system refuses to advance to stage 3 (What Hurts?) until your buyer is specific enough that the next stage’s interview questions will produce useful data.
The output is a Buyer Persona Canvas populated with the 5 Rings of Buying Insight (Adele Revella, 2015): priority initiative, success factors, perceived barriers, buyer’s journey, decision criteria.
Further reading
- Pre-launch market research spoke, the full SOM math the four passes feed into.
- Buyer Persona Canvas, the persona work that operationalizes pass 4.
- How to validate a business idea, the wider validation flow this question fits inside.
Related
Jobs to be Done (JTBD)
Jobs to be Done reframes every product decision: customers don't buy features, they hire products to get a job done. Here's how to apply it without faking it.
Buyer Persona Canvas
Buyer personas done properly. Adele Revella's research-based approach plus a one-page canvas. Why most personas are useless, and what makes the rare ones decision-grade.
The Mom Test
The Mom Test is Rob Fitzpatrick's framework for customer interviews that generate real signal. Not praise. Three rules, applied step-by-step, with examples.
Market Research
Most founder market research is a TAM slide that nobody believes. The numbers that actually matter are smaller, harder to defend, and tell you whether the market exists for the ten-customer version of your business.
Idea Validation
Most founders confuse idea validation with idea-receiving-encouragement. The two have nothing in common. Here's what real validation looks like, and the four methods that actually produce it.
Buyer Persona
A research-based archetype of a real buyer in a specific market segment, used to align product, pricing, and positioning decisions. Coined by Tony Zambito in 2002. Methodology formalized by Adele Revella in 'Buyer Personas' (Wiley, 2015).
Frequently asked questions
Why is 'everyone' the wrong target market?
How narrow is too narrow?
What if my idea works for multiple segments?
How do I count my target market?
Should I pick the biggest segment or the most enthusiastic one?
Keep exploring
The 9-step playbook from market verdict to ship-ready spec.
Jobs to be Done reframes every product decision: customers don't buy features, they hire products to get a job done. Here's how to apply it without faking it.
The Mom Test is Rob Fitzpatrick's framework for customer interviews that generate real signal. Not praise. Three rules, applied step-by-step, with examples.
Most founder market research is a TAM slide that nobody believes. The numbers that actually matter are smaller, harder to defend, and tell you whether the market exists for the ten-customer version of your business.
Most founders confuse idea validation with idea-receiving-encouragement. The two have nothing in common. Here's what real validation looks like, and the four methods that actually produce it.
Does each customer make you money? Or cost you money?
Run nine framework-backed decisions in order before writing code: define the buyer, prove the pain is painful, name the winning angle, scope V1 to the smallest test of the hypothesis, get behavioral evidence (paid pre-orders, signed letters of intent, or credit cards on file from a Fake Door Test), then ship. Most failed startups skipped at least three of those nine. Plan to spend two to four weeks on this. It saves six to nine months of building the wrong thing.
For indie hackers who've wasted months on dead ideas. ShipFit forces 9 decisions before you write a line of code. Proven frameworks, exports to Cursor.
If you want a conversation partner, Buildpad. If you want to stop researching and ship, ShipFit. Both solve different problems for different founders. Don't pick on hype.
Ready to make your next product a success?
9 decisions between your idea and a product worth building.