What is an ideal customer profile (ICP)?

ICP, persona and segment: the differences

Three terms get mixed up, and mixing them wastes work. A segment is any group of customers who share something, such as industry or location. You can define dozens. Segments are how you slice your customer list.

An ideal customer profile is the one segment, or a few, that you decide to pursue because they are the best fit for what you do. It answers who to aim at. It is usually defined by facts you can check and use to filter lists, ads and search terms.

A persona is a fictional but realistic description of a typical person. Nielsen Norman Group defines it as a fictional, yet realistic, description of a typical or target user, built from research. It answers who is deciding and what they care about. A business can have one ICP and two or three personas, such as the owner who signs and the manager who uses the service.

Why this matters to a business owner

Every other marketing choice depends on who you are trying to reach. Channels, messages, offers, prices and even the pages on your site change with the answer. Without it, you write for everyone, and writing for everyone persuades no one.

The U.S. Small Business Administration advises owners to be specific about the target market, because a business will not be for everybody. In practice, a clear profile makes marketing cheaper: you stop paying to reach people who will never buy, and you stop attracting customers who cost more to serve than they bring in.

It also helps with search and AI search. Google’s guidance on helpful content asks whether you have an existing or intended audience that would find your content useful. A clear profile is how you answer that question.

How to build an ICP from your best customers

Start with data you already have. List your customers from the last two years. Mark the best fifth by profit, ease of work, loyalty and referrals. These are the customers you would clone. Then look for what they share.

For businesses that sell to other businesses, the shared facts are firmographics: industry, number of employees, revenue band, location, growth stage and the tools they use. For consumers, the equivalents are age band, household, location and life stage. Record only attributes you can use to find more of them.

Then add the opposite: your worst customers. Mark the fifth that was late to pay, demanding, or left quickly, and note what they share. The contrast sharpens the profile, since a good ICP states who you will not chase as well as who you will.

• Pull the list of customers with their revenue, margin or lifetime value, and tenure.
• Rank them and mark the top fifth and bottom fifth.
• Write down 5 to 8 attributes the top group shares and the bottom group lacks.
• Check the profile is large enough to sustain growth, by estimating how many such businesses or people exist in your area.
• Write it as a half-page: who, why they fit, where to find them and the signals that they are ready to buy.

Beyond demographics: the job the customer is hiring you for

Facts about a customer do not explain why they bought. Harvard Business Review’s 2016 article by Clayton Christensen and colleagues, Know Your Customers’ Jobs to Be Done, argues that firms know more about customers than ever, yet innovation stays hit-or-miss, because the real question is why customers make the choices they do.

The jobs to be done idea is that people hire a product or service to make progress in a specific situation. Two customers with the same size and industry may hire you for different jobs: one to avoid a tax penalty this quarter, another to stop worrying about the books for good. Each needs a different message.

Add a job line to your ICP. Use the form: when [situation], they want to [progress], so they can [outcome]. It is the most useful sentence you will write for copy, ads and sales conversations.

Building personas that people actually use

Nielsen Norman Group says personas must be based on user research, and lists interviews, surveys and field studies as methods. Its guidance is to group the behaviours and goals you find into distinct roles, drop overlapping groups and add only the details that affect decisions.

For most small businesses, one page per persona is enough: role, goals, worries, what they search for or ask, how they decide, who else is involved, and a real quote from an interview. Skip invented hobbies, stock photos and clever names. NN/g warns that irrelevant details bury the important ones.

Treat vendor templates, such as HubSpot’s free persona tool, as a starting layout. A template cannot supply the research, and a persona filled in from imagination is just a guess with a name.

Validate with interviews

Interview five to eight customers who fit the profile, and two or three who were a poor fit. Ask about the moment they started looking, what else they tried, who was involved, what almost stopped them and what made them choose you. Ask for stories, not opinions.

Then test the profile in the market. Check that the target group is reachable: can you filter an ad audience, a search term or a lead list by your attributes? Run a small campaign aimed at the profile and compare it with a broad one on enquiry quality, not volume.

Revisit the profile every six to twelve months. Customers change, and so do your services. Keep the previous version so you can see what shifted.

How to use the profile

Put it to work in four places. Positioning: your one-sentence promise should fit the ICP. Channels: pick those where the profile looks. Content: answer the questions the personas ask at each stage, which the customer journey guide shows how to place with a journey map. Sales: use the signals to decide which enquiries to pursue first.

Our guide to building a marketing strategy shows where the profile sits among the other choices, and what digital marketing is shows how each channel reaches it.