How many ICPs should a company have?

As few as the business can honestly defend. Two or three segments are workable if each has its own filters and its own messaging. A dozen is a sign the definition has quietly become a description of everyone who has ever bought.

Is an ICP the same as a buyer persona?

No. An ICP is a company-level definition — industry, size, region, conditions. A persona is person-level — role, seniority, what that person is measured on. A list is built from the ICP and then filtered down to the personas inside it.

What is an ICP (ideal customer profile)?

An ideal customer profile is a written definition of the kind of company worth selling to: industry, size, region, business model, and the technologies or conditions that make a product a fit. An ICP describes companies, not the individual buyers inside them.

Why it matters

Every downstream decision inherits the ICP — which lists get built, which accounts score highest, which signals are worth acting on, which inbound leads get a human. A vague ICP does not stop those decisions being made; it only makes them arbitrary.

How to write an ICP

Start from closed-won accounts, not from the market you wish you had.
Identify the attributes those accounts share that a prospect record can actually be filtered on — industry, headcount band, region, technologies in place.
Write down the disqualifiers as explicitly as the qualifiers. The accounts you should not work are the more useful half.
Express the result as filters against real fields, so a list can be built from it without interpretation.
Revisit it when the product or the pricing changes, because both move the fit.

An ICP expressed as filters

Ideal customer profile dimensions with an example of each written as a filter
Dimension	Example of a filterable definition
Industry	B2B software and technology services
Company size	50 to 500 employees
Region	UK, Ireland and the Nordics
Technology in place	Runs a CRM the product integrates with
Structure	Has a named revenue operations function
Disqualifier	Under ten employees, or no outbound motion at all

Common mistakes

Writing an ICP no field can express. “Innovative, growing companies” cannot be turned into a filter.
Confusing an ICP with a buyer persona. The profile describes the company; the persona describes the person inside it.
Building it from the biggest logos rather than from the accounts that bought quickly and renewed.
Never writing down disqualifiers, which is how an obviously wrong account reaches a rep’s queue with nobody accountable for it.

Related terms

People search — Filter by the role, seniority, company size, industry and location an ICP is written in.