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Startups & Business › Validating Ideas

Customer Interviews

Talking to potential users to learn about their problems, not to pitch.

Also known as: customer interview, user interview, discovery interview

A customer interview is a conversation to learn how someone works and what hurts — not a pitch, not a demo, not a validation of your idea. You ask about their past behavior, costs and workarounds; they talk, you listen and take notes. Fifteen such conversations teach more than a month of building.

bad:  "Would you pay for an AI dashboard for your inventory?"
good: "Walk me through the last time stock ran out. What did you do? What did it cost?"

Run them in batches with a fixed question list so answers compare. Record (with permission), write up the same day, and separate facts (“they export to Excel every Friday”) from interpretations (“they need automation”). Bring a co-founder: two people hear different things.

The classic mistakes:

  • Pitching disguised as research. The moment you describe your solution, answers become politeness. Mention the idea only at the end, if at all.
  • Leading questions. “Don’t you hate how slow invoicing is?” manufactures the answer. Ask neutrally and let silence do the work.
  • Talking to non-buyers. Users without budget authority describe a different problem than the person who signs. Interview the buyer and the user separately.
  • No notes, no synthesis. Ten conversations remembered as vibes. Write each up, tag the pains, count how many mentioned each — patterns beat impressions.
  • Stopping at five. Five interviews confirm your biases beautifully. Past ten, surprises start; past twenty, patterns stabilise.

Afterwards: extract the pains, rank by frequency × cost, and test the top one with a real commitment ask — a pre-sale, a pilot, a letter of intent. Attention is cheap; willingness to pay is the finding that matters.