Starting a business has never been easier and getting anyone to notice it has never been harder, which is why marketing advice has shifted from describing your product to describing your customer. A buyer persona is a written, specific portrait of the person you are selling to, and building one properly replaces most of what small businesses currently spend on advertising.
The instruction that follows from it is counterintuitive: stop telling people why they should buy, and establish who you are dealing with and what problem they need solved.
A persona answers four questions, specifically
Who exactly are you talking to. Where do they already spend their time. What gets them up in the morning. What keeps them awake at night. Answers like “small business owners” are not answers. “A 40-year-old owner of a six-person plumbing business who cannot get quotes out fast enough” is one, and it tells you what to write and where to put it.
Semi-fictitious means built from evidence, not invented
A persona is assembled from what actual customers have told you, what they asked before buying and what they complained about afterwards. Inventing one from assumptions produces marketing aimed at a person who does not exist, which is the most expensive possible mistake.
Knowing where they spend time replaces the spray-and-pray budget
Once you know which platforms, groups, publications and events your customer actually uses, the advertising decision becomes obvious and small. Most wasted marketing spend comes from businesses buying reach because they do not know where their customer is.
Help them find you rather than chasing them
Content built around the problem the persona has, published where they look, brings people who already have the problem. That is a fundamentally cheaper acquisition route than interrupting people who do not, and it is available to any business willing to write about what it knows.
Personas built from customer data carry obligations
Assembling detail about identifiable customers means processing personal information, with the conditions enforced by the Information Regulator. Building personas from aggregated patterns rather than named individual profiles is both safer and generally more useful.
Frequently asked questions
What is a buyer persona?
A specific written portrait of your ideal customer, covering who they are, where they spend time, what motivates them and what worries them.
How specific does it need to be?
Specific enough to tell you what to write and where to publish it. Broad descriptions like “small business owners” are not usable.
Where does the information come from?
From what actual customers asked before buying and complained about afterwards, not from assumptions, which produce marketing aimed at nobody.
How does this save money?
Knowing where your customer already spends time makes the advertising decision small and obvious, replacing broad reach buying.
Are there rules about building customer profiles?
Yes. Detail about identifiable individuals is personal information with processing conditions attached, so aggregated patterns are safer and usually more useful.
Further reading
Originally published in September 2017. Updated September 2026 to set out how to build and use a buyer persona rather than promoting a single session.
