The OS/Scale 00/ICP Discovery Framework
10
Minimum Switching Moment Interviews to Build a Working ICP Hypothesis

ICP Discovery Framework

A working hypothesis about who your ideal customer is, sharp enough to guide the next 30 conversations. Built from real switching moment data, not assumptions.

Free AccessScale 004–10 weeksMin. 10 interviews
What changes when you finish
✓
Founder-led outbound returns better results per hour invested. Fewer conversations to nowhere.
✓
Discovery calls have a qualification framework. Confirm or disconfirm fit in the first ten minutes.
✓
Outreach is built around confirmed trigger events, not generic value propositions.
✓
Investor conversations get sharper. A behavioral Ideal Customer Profile (ICP) with a trigger event is a more credible answer to "who is your customer."
✓
Your first sales hire has something to work from. The ICP is the foundation of every rep's qualification process.

What this framework is and is not

This framework typically takes 4 to 10 weeks. The bottleneck is almost always getting the first five interviews booked, not running them.

Already have paying customers?

Skip to Step 2. Interview the person who championed or made the buying decision at each account, use their answers to fill the canvas, and come back to Step 1 if the validation scorecard reveals gaps.

On data capture

Over-rotate on capturing data throughout this process. Every conversation, every signal, every disqualification reason. This data is the foundation for any Artificial Intelligence (AI)-powered GTM function you build as you scale. AI tools are only as good as the signal you give them.

On the outcome

Your ICP will not be perfect when you finish. That is not the goal. You are building a hypothesis to test, not a definition to defend. A working ICP structures your thinking and increases the efficiency of every sales conversation you have.

On Product-Led Growth

This framework applies to sales-led, product-led, and hybrid motions. In a Product-Led Growth (PLG) motion, your ICP defines who you optimize activation for and which self-serve users are worth a direct sales conversation. PLG-specific notes are included throughout.

What is an ICP

The ICP is not a job title and a company size. It is a precise description of the person who has a problem urgent enough to pay you to solve, at a company structured to buy from you, at a moment when they are actively looking.

Filter vs. ICP

The most common mistake is confusing an ICP with a demographic filter. The difference determines the return on every hour of outbound you run.

A filter
"Head of Compliance at financial services firms in Germany with 500 to 2,000 employees."

Tells you who might be a fit. You could build a list of 10,000 contacts matching this description. Most of them are not ready to buy.

A behavioral ICP
"Head of Compliance at a financial services firm that just had a regulatory audit flag a gap in their reporting process, is currently managing it with spreadsheets and manual sign-offs, and has posted internally about the pressure to automate controls."

Tells you who is ready to buy now, and why. Every word in this description has a sourcing implication and a qualification signal.

Your ICP will be wrong the first time

Plan to revisit after every 10 conversations, after your first 5 closed deals, and again after your first 20. The goal right now is a working hypothesis sharp enough to guide the next 30 conversations.

If you have more than one potential ICP segment, define and validate one before pursuing others. Multiple ICPs pursued simultaneously dilute your interview pool and make it harder to identify what is actually working.

Step One

The Switching Moment Interview

4–10 weeks
Two types of interviews

Run both types in this order. Five non-switcher interviews followed by five switcher interviews produces substantially more signal than ten of either type alone.

  • Type A / Non-Switcher
    Someone in your target role, at your target company type, dealing with the problem but who has not yet acted. Use this to validate that the problem exists and understand what would make it urgent enough to act on. Start here: the ask is lower stakes and most people are willing to talk about how they currently work.
  • Type B / Switcher
    Someone who recognized the problem, evaluated options, and made a change. Use this to understand the buying trigger, the decision process, and what finally made them act. Move to these once you have a working hypothesis from your non-switcher conversations.
Interview A: the four zones for non-switchers
Type A

Pick two questions from each zone. If you are talking more than 30% of the time, you are covering too much ground and not listening enough.

  • Zone 1 / Problem existence
    Validate the problem is real in their context before going deeper. Lead with an observation, then listen.
    • How does your team currently handle [problem area]?
    • How long have you been managing it this way?
    • Who else in the organization is affected by it?
  • Zone 2 / Pain tolerance
    Understand why they have not acted. This tells you what stands between the problem and a buying decision.
    • Have you ever looked at alternatives to how you currently handle this?
    • What stopped you from taking that further?
    • Is this something that comes up in leadership conversations?
  • Zone 3 / Actuability signals
    What would make this pain urgent enough to act on.
    • What would have to happen for this to become a top-three priority?
    • Has anything changed recently that has made this more or less of an issue?
    • Are there moments in the year when this feels more acute?
  • Zone 4 / Prior attempts
    What they have already tried, even informally. Prior attempts reveal the real competition.
    • Have you tried to solve this before, even informally?
    • What did you try and what happened?
    • Is there someone on your team who has become the unofficial owner of keeping this working?
Interview B: the four zones for switchers
Type B

Built on Jobs-to-be-Done methodology. These four forces (Push, Pull, Anxiety, Habit) explain every buying decision. Map them for every switcher interview.

  • Zone 1 / Push (the frustration)
    What was happening when they first started questioning their current approach: the specific event that made them decide to act.
    • Walk me through what was happening in the weeks before you started looking for a new solution.
    • Was there a specific moment or event that made you think something had to change?
    • What finally made it urgent enough to do something about?
  • Zone 2 / Pull (the attraction)
    When and how did they first hear about alternatives? What made them think a new solution might actually work?
    • How did you first hear about the solution you ended up going with?
    • What made you think it might actually solve the problem?
    • Was there a specific demo moment that made you more confident?
  • Zone 3 / Anxiety (the hesitation)
    What almost stopped them from switching. These are your objections and the anxiety reducers that overcome them.
    • What almost stopped you from going ahead?
    • Was there a moment where you nearly walked away?
    • What would have made you more confident earlier in the process?
  • Zone 4 / Habit (what they were replacing)
    What they used before and how it worked day to day. This reveals the real competitor and any unintended consequences of switching.
    • Walk me through how you managed this before.
    • What did you have to give up or change when you switched?
    • What changed in practice, not in theory, after you switched?
Step Two

The ICP Hypothesis Canvas

After 10 interviews
The four dimensions

Fill this canvas after your interviews, not before. Each dimension should be traceable to a specific conversation or pattern across multiple conversations.

Dimension 1 / Firmographic
Who the company is

Company type, size, stage, geography. These are necessary context but not sufficient. Firmographics narrow the universe; they do not identify readiness to buy.

Dimension 2 / Trigger event
What just happened to them

The specific event that makes the problem urgent enough to pay to solve. This is the most valuable dimension in the canvas. If you cannot name the trigger event, you do not yet have a behavioral ICP.

Dimension 3 / Pain intensity
How much they feel it

Not all pain is equal. The same problem at one company is a minor inconvenience; at another it is a board-level risk. This dimension captures what signals that the pain is high enough to justify a buying decision.

Dimension 4 / Behavioral signals
How you can find them

Observable behaviors that indicate a prospect matches the ICP. Job postings, LinkedIn activity, product usage patterns, events attended, content engaged with. These translate the ICP into a sourcing list.

Validation and disqualification

Once the canvas is drafted, run it through a validation scorecard and build a disqualification rules document. Knowing who is not an ICP is as important as knowing who is. This is the most commonly skipped step, and the primary reason early sales motions stall.

  • Validation scorecard
    A structured assessment of whether your current ICP hypothesis has enough evidence behind it. Covers interview diversity, trigger event specificity, signal reliability, and coverage of closed deals to date.
  • Disqualification rules doc
    Explicit criteria for ending a conversation early. What prospect answers are immediate disqualifiers. What the rep is not allowed to promise. This document is your most effective tool for protecting conversion rates as you scale outbound.
Milestone

You now have an ICP.

A written, behavioral ICP with a named trigger event and sourcing-ready behavioral signals. Not a demographic filter. Not a hypothesis you cannot defend. An ICP you can put in front of a first hire and have them qualify with it from day one.

Outbound changes

You are no longer writing to a title and a company size. You are writing to a specific moment. Open rates and response rates should improve within two weeks of making the switch.

Qualification changes

Discovery calls now start with a hypothesis test, not an open exploration. You confirm or disconfirm fit in the first ten minutes. Close rate on progressed pipeline should increase.

Hiring changes

A first sales hire now has something to work from. The ICP document, the disqualification rules, and the interview methodology together form the foundation of their qualification process.

Investor conversations change

A behavioral ICP with a trigger event is a more credible answer to "who is your customer" than a demographic filter. It signals that you understand who is buying now, and why, from actual data.

Step Three

Keeping Your ICP Current

Ongoing
The revision cadence

Revisit the canvas on a scheduled cadence tied to your deal activity. The data that improves your ICP fastest is the data you are already generating from conversations and closed deals.

  • After every 10 conversations
    Review your disqualification signal log. Check whether new patterns are emerging that are not captured in the current canvas. Add behavioral signals you have encountered that predicted a positive or negative outcome.
  • After every 5 closed deals
    Run a structured win review against each ICP dimension. Document the trigger event for each deal closed. If the trigger event is consistently different from what your canvas predicts, update the canvas.
  • After every 5 lost deals
    Run a structured loss review. Identify whether the loss was an ICP miss (wrong profile targeted), a process miss (right profile, wrong execution), or a product miss (right profile, product did not solve the problem). Only the first type should trigger an ICP update.
The disqualification signal log

A running record of every disqualification signal you encounter, tied to a specific deal or conversation. This is the primary input into your ICP revision cadence and the most practically useful document in your early sales motion.

Each entry should include: the signal observed, the stage at which it appeared, the deal outcome, and whether the disqualification was correct in retrospect. Over 30 to 50 entries, patterns emerge that are more reliable than any single analyst's opinion about your market.

Addenda

Reference material for specific parts of the framework. Each addendum addresses a distinct challenge that founders consistently encounter when running this process for the first time.

Addendum A
Candidate sourcing
How to find interview candidates when your network does not reach your target market

Sourcing is the most common bottleneck. This addendum covers five approaches for reaching non-switchers and switchers when you do not have a warm network in the segment you are targeting: LinkedIn outreach, community sourcing, conference and event contacts, customer referrals, and cold outreach via trigger event signals.

Read the full addendum →
Addendum B
Running conversations
How to run an interview that produces usable signal rather than polite conversation

The Mom Test methodology applied to ICP discovery interviews. How to avoid the three most common failure modes: asking hypothetical questions, accepting compliments as data, and talking more than 30% of the time. Includes a pre-conversation checklist and a note-taking template.

Read the full addendum →
Addendum C
Data quality checks
How to check whether your conversations are producing useful data

A structured data quality review to run after every five interviews. Covers signal-to-noise ratio, trigger event consistency, interview pool diversity, and whether your disqualification criteria are producing accurate outcomes. Includes corrective actions for each quality issue.

Read the full addendum →
Addendum D
AI-assisted analysis
How to use AI to analyze interview transcripts and surface patterns in your conversion data

Six operator-tested prompts for using AI assistants to extract trigger events from interview transcripts, identify patterns across multiple conversations, check ICP hypothesis consistency against win and loss data, and analyze Product-Led Growth (PLG) conversion signals. Includes guidance on prompt chaining for maximum signal extraction.

Read the full addendum →

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