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Business & Strategy

Customer Personas

Model #0597Category: Business & StrategyDepth to apply:

By Updated 3 sources

4 min read

Contents

  1. 1. Core Idea
  2. 2. How to See It
  3. 3. How to Use It
  4. 4. Founders & Leaders
  5. 5. Connected Models
  6. 6. One Key Quote
  7. 7. Summary & Further Reading
Business & Strategy
Section 1

Core Idea

Customer personas are archetypal descriptions of who you're selling to — a named, concrete profile (e.g. "Marketing Mary," "IT Ian") that captures goals, pain points, context, and behavior. Done well, they align product, marketing, and sales around a shared picture of the customer; done poorly, they're generic fiction that doesn't change decisions. In building and scaling, personas are useful when they're grounded in research and tied to segments and journey stages, and when they drive what you build and how you message. The test is simple: does "would Marketing Mary care?" or "is this for the economic buyer or the end user?" change a real decision? If not, the persona is wallpaper. Keep the set small (2–4) and refresh from interviews and data so they don't drift into fantasy.

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Section 2

How to See It

Product
You're seeing Customer Personas when roadmap and feature prioritisation reference specific personas ("this is for the operator who…") and there's a clear link from persona need to requirement.
Marketing
You're seeing Customer Personas when messaging and creative are written for a named persona — tone, channels, and value props differ by persona — and performance is tracked by segment that maps to personas.
Sales
You're seeing Customer Personas when discovery and pitch are tailored to "who we're talking to" (economic buyer vs user vs champion) and win/loss is analysed by persona fit.
Section 3

How to Use It

Build personas from real data: interviews, usage, win/loss. Keep the set small (2–4); add detail that affects decisions (goals, objections, where they are in the journey), not demographics for their own sake. Use personas in planning: "Would Marketing Mary care?" "Is this for the economic buyer or the end user?" Refresh when the market or product shifts.
Decision filter
"When we ship or message, are we aiming at a specific persona — and did that persona come from evidence, not guesswork? If we can't name who this is for, we're spraying."
As a founder
Define 2–4 personas from customer and prospect research. Use them in product (who is this for?), marketing (message by persona), and sales (who are we talking to?). Tie personas to segments and journey so they're actionable, not decoration.
Section 5

Founders & Leaders

David OgilvyFounder, Ogilvy & Mather; advertising pioneer
Ogilvy insisted on knowing the consumer: "The consumer isn't a moron; she is your wife." He used research and observation to build a clear picture of who he was talking to — in effect, personas — and tailored copy and creative to that picture. Founders can do the same: one sharp persona beats a dozen vague ones.
Section 7

Connected Models

Reinforces
Segmentation
Segmentation divides the market by meaningful criteria (firmographic, behavioral, need). Personas give segments a face and a story — they're the narrative form of a segment so product and marketing can "talk to" someone concrete.
Tension
Jobs to Be Done
JTBD focuses on the job, not the person. The tension: personas can over-emphasise who and under-emphasise the job. Use both: persona for context and messaging, JTBD for the core value proposition and feature set.
Leads-to
Customer Buying Journey
Personas often sit at a stage in the journey (e.g. problem-aware Mary vs product-aware Mary). The journey defines what message and touchpoint fit; the persona defines who you're addressing. Use them together for targeted messaging.
Section 8

One Key Quote

"Do your homework. Know your customer. The more you know about who you're talking to, the more sharply you can speak to them — and the more likely they are to respond."
— David Ogilvy, Confessions of an Advertising Man (1963)
Section 11

Summary & Further Reading

Customer personas are archetypal, research-based profiles of who you're selling to. Use 2–4 personas to align product, marketing, and sales; tie them to segments and journey; and refresh from data. When they drive decisions, they're useful; when they're generic fiction, they're not.
01
The Persona Lifecycle — John Pruitt & Jonathan Grudin
Academic / practice
Canonical treatment of building and using personas in product development; research-based approach.
02
Obviously Awesome — April Dunford (2019)
Book
Positioning and context; supports connecting personas to positioning and message.
03
Competing Against Luck — Clayton Christensen (2016)
Book
JTBD and the job; useful tension with personas — job vs person — for sharper positioning.

Why this matters next

mental modelsNarrative

Customer Personas applied the Narrative mental model

mental modelsJobs to Be Done

Customer Personas applied the Jobs to Be Done mental model

mental modelsPositioning

Customer Personas applied the Positioning mental model

mental modelsSegmentation

Customer Personas applied the Segmentation mental model

mental modelsCustomer Buying Journey

Customer Personas applied the Customer Buying Journey mental model

mental modelsCustomer Hunting Types

Customer Personas applied the Customer Hunting Types mental model

Frequently asked questions

What is Customer Personas?

Customer Personas is a mental model used for better thinking and decision-making.

How do you apply Customer Personas?

To apply Customer Personas, identify situations where this framework is relevant, then use it as a lens to evaluate your options and decisions. The model is most useful when combined with other complementary mental models.

What category does Customer Personas fall under?

Customer Personas falls under the Business & Strategy category of mental models. Other models in this category can be found on the Business & Strategy hub page.

Why is Customer Personas important?

Customer Personas is important because it provides a structured way to think about problems that would otherwise be approached with intuition alone. Understanding this model helps you avoid common reasoning errors and make better decisions.

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