What is a buyer persona?

Written by Madalena Rugeroni, founder of Mazo · Updated 10 November 2026

A buyer persona is a profile of the person inside your ideal customer account who feels the problem, evaluates options and signs off on the purchase: their role, goals, daily workflow, objections and where they look for answers. Your ideal customer profile describes the company; the persona describes the people there you have to convince.

ICP vs buyer persona

	Ideal customer profile	Buyer persona
Describes	A company	A person inside that company
Built from	Industry, size, tech stack, trigger events	Role, goals, workflow, objections, information sources
Decides	Which accounts to target	What to say to them and where
How many	One to start	Usually two or three per ICP: user, champion, budget holder

Define the ICP first. A persona without a target company type describes a job title everywhere, which is too broad to write messaging for.

What a useful buyer persona contains

Role and seniority, and who they report to.
The trigger that makes them start looking: a new hire, a missed target, an audit, a tool contract up for renewal.
What they use today to solve the problem, including spreadsheets and doing nothing.
Their objections, in their own words from sales calls.
Where they look for answers: communities, newsletters, peers, search.
Their part in the purchase: user, champion, technical evaluator or budget holder.

Worked example

A fictional SaaS sells shift scheduling to dental clinic groups with 5 to 30 locations (the ICP). It writes three personas from 15 customer interviews.

Operations manager (user and champion): builds rotas in spreadsheets every Sunday evening; starts looking after a clinic opens short-staffed.
Group COO (budget holder): cares about overtime cost and staff turnover; reads the industry association newsletter.
IT lead (technical evaluator): asks about single sign-on and data location; can block the deal late if nobody involves them early.

The homepage speaks to the operations manager. The ROI one-pager is written for the COO. The security page exists because the IT lead showed up in three lost deals.

Why it matters from €0 to €1M ARR

Pre-revenue: one rough persona per role you interview. Quote real conversations; skip invented names, photos and hobbies.
First 10 customers: note who found you, who championed you and who signed in every deal. Personas come from that pattern.
€10k+ MRR: write messaging and content per persona, and check that sales calls reach the budget holder before the proposal stage.

Mazo's rule of thumb: if a persona detail wouldn't change a headline, a channel or a sales question, delete it. A persona earns its place by changing what you say or where you say it.

Common buyer persona mistakes

Writing personas before an ICP. "Marketing managers" spans every industry and company size.
Inventing them in a workshop. Personas built without customer interviews describe the team's assumptions.
Only describing the user. B2B deals stall at the budget holder or the technical evaluator.
Never updating them. Revisit after every 10 new customers or any change in who signs.

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FAQ

What is the difference between an ICP and a buyer persona?

An ideal customer profile describes the type of company you should sell to. A buyer persona describes a person inside that company, such as the user, the champion or the budget holder, and what they care about.

How many buyer personas should a startup have?

Start with two or three per ICP: the person who uses the product, the person who champions it internally and the person who approves the budget. Add more only when a new role keeps appearing in deals.

How do you create a buyer persona?

Interview 10 to 15 recent buyers and lost prospects. Record their role, what triggered the search, what they used before, their objections and where they look for advice, then group the answers by role.

Who wrote this

Madalena Rugeroni built Mazo. She's an ex-Googler, a startup advisor and investor, and runs a portfolio of internet companies. Before that, as Head of Growth at Amplemarket, she scaled a B2B SaaS to $10M ARR. LinkedIn

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Further reading. Personas as a design tool were introduced by Alan Cooper (The Inmates Are Running the Asylum); buyer personas for B2B marketing were developed by Adele Revella (Buyer Personas). These are published methodologies credited to their authors; Mazo is not affiliated with or endorsed by them.