THE SHORT ANSWER
Define an initial ICP using observable characteristics: customer type, urgent problem, trigger, current alternative, ability to buy, path to reach them and conditions for success. In B2B, separate the user, buyer, decision-maker and influencer. In B2C, distinguish the person using the product from anyone shaping or funding the choice.
Build an evidence-led ICP
| Field | Question |
|---|---|
| Segment | Which people or organizations share the relevant context? |
| Problem and trigger | What changed or became urgent? |
| Alternative | How is the job handled today? |
| Value condition | What outcome would justify change? |
| Buying ability | Who can approve time, money and risk? |
| Reachability | Where can this group be identified and approached? |
| Success condition | Who can realistically activate and retain? |
Evidence & context: U.S. Small Business Administration
Separate market roles
The user operates the product. The buyer controls the transaction. A decision-maker accepts the organizational commitment, while influencers shape the choice. One person can hold several roles, especially in consumer purchases and small businesses.
Map the questions, proof and objections of each role rather than writing one generic persona.
Narrowing can improve learning
A narrower initial segment can make language, outreach, onboarding and feedback more comparable. Focus is a sequence decision, not a claim that other customers will never be served.
Evidence & context: OpenStax, Rice University
Update the profile from behavior
- Interview context and recent behavior
- Response to outreach
- Conversion and objection patterns
- Time and support required to activate
- Continued use, renewal or repeat purchase
- Referrals and expansion
Startup Fundamentals covers early adopters and initial customer definition. Here, use that evidence to choose positioning, channel and motion.
Evidence & context: GOV.UK Service Manual
Sources & further reading
- Market research and competitive analysis
U.S. Small Business Administration. Official planning guidance on demand, market size, location, saturation and pricing. It is a research framework, not proof that a particular opportunity will succeed.
- Market Segmentation and Consumer Markets
OpenStax, Rice University. Open educational material on dividing markets into groups with shared characteristics and expected responses. Segments remain hypotheses until supported by customer evidence.
- Learning about users and their needs
GOV.UK Service Manual. Public-service design guidance linking user needs to stories, acceptance criteria and continued research. Its process should be adapted to the product and risk context.
Examples and exercises are illustrative unless attributed to a source. No independent expert review is claimed.
A correction, a counterexample or an experience worth sharing?
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