glossary/Ideal Customer Profile (ICP)
glossary term
Definition
An ideal customer profile (ICP) is the set of firmographic and behavioral criteria that define the accounts worth your time. The operator's version is not a persona document. It is a testable filter, specific enough to disqualify most of the market on purpose.
A lot of ICP work produces a slide with a smiling avatar named Marketing Mary. That does not help you decide who to work on Monday. A useful ICP is a set of rules you can run against a list: segment, size, stage, geography, motion, and the disqualifiers. If it does not throw most companies out, it is not specific enough to be doing any work.
Hard filters define who is in range at all: is this B2B SaaS, are they the right size and revenue stage, are they in a market you serve, do they run the kind of motion your product fits. Then the softer layer, the buying signals, ranks the ones that are in range by who is most likely in-market now. Fit gets you the list. Signal orders it. That two-part split is the backbone of lead scoring.
One trap worth naming. When you score accounts, score whether this company is a buyer for you, not what their product does or who their customers are. A founder who builds a CRM, a dev tool, or an AI product is still a B2B SaaS founder running their own go-to-market. The product vertical is usually irrelevant. The buyer's role and stage are what matter. Getting this backwards throws out good accounts because you judged their category instead of their situation.
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The harder question
Knowing the concept is step one. Getting a working system shipped into your live stack, in weeks, is the job. That is what a fractional GTM engineer does: find the one lever, build the first working fix, hand you a system a hire can run.