Ideal customer profile (ICP)
An ideal customer profile is a description of the kind of organisation that gets the most value from what you sell, written specifically enough that you can tell whether a given company matches it.
Also called ICP.
An ideal customer profile describes the kind of organisation that gets the most out of what you sell. It describes a company rather than a person, which is what separates it from a buyer persona: the ICP says which companies to approach, and the persona says who inside one to write to.
The test of an ICP is whether it can exclude anything. "Small and medium businesses that want to grow" is not a profile, because no company fails it. A usable one names attributes you can actually observe from outside: size band, what they sell and to whom, the tools they run, how they got funded, and whatever situational fact makes the problem you solve urgent for them right now. That last part is what most profiles are missing, and it is the part that determines whether outreach lands.
It is built from customers you already have, not from the market you would like. The useful exercise is to look at who renews, who expands, and who reaches value fastest, then ask what those accounts share that your churned ones do not. Before you have customers, an ICP is a hypothesis, and it should be written down as one so it can be corrected rather than defended.
In practice
- Series A B2B SaaS companies, 20 to 100 staff, selling to engineering teams, already running a CRM but no dedicated marketer.
- Not an ICP: "fast-growing tech companies", which excludes nothing observable.
- A profile narrowed after noticing that every account which churned had bought without a technical owner.
Questions
How is an ICP different from a buyer persona?
An ICP describes the organisation and a persona describes a person inside it. The ICP decides which companies are worth approaching at all; the persona decides who within a matching company to write to and what they care about. You need both, and they answer different questions: getting the ICP wrong means writing to the wrong companies, and getting the persona wrong means writing to the wrong person at the right company.
How narrow should an ICP be?
Narrow enough that a majority of companies fail it, and no narrower than your evidence supports. Early on the temptation is to keep it wide so as not to rule out revenue, which produces outreach that is relevant to nobody. The practical test is whether the profile changes what you write: if the same email works for everything inside it, the profile is still too broad.
Can I build an ICP before I have customers?
You can write a hypothesis, and you should, but call it that. Pre-revenue the profile is a guess about who has the problem badly enough to pay, and its value is that it is specific enough to be proven wrong quickly. Treat the first fifty conversations as the experiment that corrects it rather than as validation of it.
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