STP: Segmentation, Targeting and Positioning Explained
How to apply the STP model in marketing essays, choosing segmentation bases, evaluating segments against real criteria, and writing a positioning statement that holds up.
Segmentation, targeting and positioning is the backbone of strategic marketing, and it is the section markers read most carefully because it is where genuine strategic thinking shows. Most students can define the three stages. Far fewer can defend a segment choice with evidence, which is what separates a pass from a distinction.
The Logic of the Model
STP is sequential and each stage constrains the next. You divide the market into meaningful groups, you decide which groups are worth pursuing, and you then design a position that appeals specifically to the groups you chose. Positioning is not a free choice, it is the consequence of your segmentation and targeting decisions. Essays that treat the three stages as independent lose marks for exactly this reason.
Choosing a Segmentation Base
- Demographic: age, income, education, life stage. Easy to measure, often weak at explaining behaviour.
- Geographic: region, climate, urban or rural. Useful for distribution and localisation arguments.
- Psychographic: values, lifestyle, personality. Explains why people buy, harder to evidence.
- Behavioural: usage rate, loyalty, benefits sought, purchase occasion. Usually the strongest for assignments because it links directly to marketing decisions.
The strongest submissions combine bases rather than picking one. "Women aged 25 to 34" is thin. "Urban professionals aged 25 to 34 who buy premium coffee at least four times a week and cite sustainability as a purchase driver" is a segment you can actually market to.
Evaluating Segments Properly
Do not simply assert that a segment is attractive. Assess it against criteria and show your reasoning.
- Measurable: can you size it with real data?
- Substantial: is it large enough to be profitable?
- Accessible: can you reach it through available channels?
- Differentiable: does it respond differently from other segments?
- Actionable: can the organisation realistically serve it with current capability?
A short table scoring two or three candidate segments against these criteria, followed by a justified choice, is far more persuasive than a paragraph asserting the obvious answer.
Targeting Strategy
State which approach you are taking and why. Undifferentiated marketing treats the market as one. Differentiated marketing serves several segments with tailored mixes. Concentrated marketing focuses resources on a single segment, which suits smaller organisations. Micromarketing personalises to individuals or localities. The choice should follow from the organisation's resources, which you established in your situation analysis.
Writing a Positioning Statement
A positioning statement is a single disciplined sentence. The conventional structure is:
For [target segment] who [need or problem], [brand] is the [category] that [key benefit], because [reason to believe].
The final clause is the one students omit and the one markers look for. A claimed benefit with no supporting reason is marketing copy, not strategy. Support it with a product feature, a proprietary process, a certification or evidence drawn from your situation analysis.
Perceptual Maps
A perceptual map is useful only if the axes are attributes your chosen segment actually cares about. Price against quality is the default and usually the least informative, because almost every brand claims high quality. Map the dimensions your segmentation surfaced, such as convenience against sustainability, and the gap in the market becomes an argument rather than a picture.
Common Weaknesses
Three recur in marking. Segments defined so broadly that no targeting decision follows. Positioning statements that describe the product rather than the customer's reason to choose it. And no acknowledgement of repositioning risk, since moving a brand's position alienates existing customers and that trade-off deserves discussion.
The Narrowing Logic, Visualised
STP is a funnel. Each stage discards options and hands a smaller, better-defined problem to the next. Drawing it this way makes the dependency obvious, and the dependency is exactly what weak essays break.
Segmentation Bases Compared
| Base | Answers | Strength | Weakness |
|---|---|---|---|
| Demographic | Who they are | Easy to measure and source | Poor predictor of behaviour on its own |
| Geographic | Where they are | Drives distribution and localisation | Rarely sufficient alone in digital markets |
| Psychographic | What they value | Explains motivation | Hard to evidence without primary research |
| Behavioural | What they do | Links directly to marketing decisions | Needs transaction or usage data |
| Firmographic | What kind of organisation | The B2B equivalent of demographic | Misses buying-centre dynamics |
Note the last row. Business-to-business cases need firmographic bases such as sector, company size and procurement structure, and a B2B essay that applies consumer demographics reads as though the framework was recited rather than understood.
Scoring Segments, Worked
Asserting that a segment is attractive earns nothing. Scoring candidate segments against explicit criteria, then justifying the choice in prose, is what a distinction answer looks like.
| Criterion | Segment A: urban commuters | Segment B: rural families | Segment C: students |
|---|---|---|---|
| Measurable | High, census and transit data | Medium | High, enrolment data |
| Substantial | High | Medium | Medium |
| Accessible | High, dense digital and outdoor | Low, dispersed | High |
| Differentiable | High, distinct usage pattern | Medium | Low, overlaps A |
| Actionable | High with current capability | Low, no distribution | Medium, price sensitivity |
| Verdict | Primary target | Reject, access cost | Secondary at most |
The table is not the argument, it is the evidence for it. Follow it with a paragraph explaining why accessibility outweighed size in this case, and you have demonstrated judgement rather than a scoring exercise.
Targeting Strategies
| Approach | What it does | Suits | Risk |
|---|---|---|---|
| Undifferentiated | One mix for the whole market | Commodities, mass staples | Vulnerable to focused rivals |
| Differentiated | Tailored mixes per segment | Resourced organisations | Cost, and brand dilution |
| Concentrated | All resources on one segment | Smaller firms and challengers | Exposure if the segment shifts |
| Micromarketing | Personalised to individual or locality | Data-rich digital businesses | Privacy, and delivery complexity |
The choice should follow from resources established in your situation analysis. A challenger brand claiming a differentiated strategy across five segments has not tested its recommendation against the organisation's actual capability, and markers notice.
Positioning Statements, Weak and Strong
Weak. Our brand is a high-quality, affordable coffee for everyone who loves great taste.
Strong. For urban professionals aged 25 to 34 who want an ethically sourced coffee without a detour, Kerb is the on-route coffee brand that guarantees a served cup within 90 seconds, because every site is sited within 200 metres of a major transit exit and staffed to a two-person minimum at peak.
The weak version fails three ways. It targets everyone, which means nobody. It claims quality and affordability together without acknowledging the trade-off. And it offers no reason to believe. The strong version names the segment, the need, the category, the benefit and the operational reason the benefit is credible.
Perceptual Maps That Argue
A perceptual map earns its space only when the axes are attributes your chosen segment actually weighs. Price against quality is the default and usually the least informative, because every brand positions itself top-right and the map shows nothing.
Map the dimensions your segmentation surfaced instead. Speed against ethical sourcing, or convenience against personalisation, produces a chart where the empty quadrant is an argument. Then say what occupying that quadrant would require, since an unoccupied space is sometimes empty because it is unprofitable rather than overlooked.
Repositioning Risk
Recommendations to reposition are common and the risk is usually unexamined. Moving a brand's position alienates the customers who chose it for its current one, takes time to register with the market, and can strand existing inventory, pricing or partnerships.
Acknowledge the trade-off explicitly. Say who you expect to lose, over what period the shift would register, and what would signal that it is failing. A recommendation with its risk named reads as commercially serious.
Common Mistakes and Fixes
| Mistake | Fix |
|---|---|
| Segments so broad no decision follows | Combine bases until the segment implies a channel and a message |
| Three stages written as independent sections | Show each stage constraining the next |
| Segment attractiveness asserted | Score against criteria, then justify |
| Positioning statement missing the reason to believe | Add the operational or evidential support |
| Price against quality perceptual map | Use dimensions your segmentation surfaced |
| Consumer bases applied to a B2B case | Use firmographic and buying-centre segmentation |
| Repositioning recommended with no risk discussion | Name who you lose and over what timescale |
Where Ethical Support Fits
Sizing a segment credibly needs data, and your library almost certainly subscribes to market intelligence databases you can access free. Asking a librarian which ones cover your sector is a five-minute conversation that changes the quality of an STP section substantially.
What stays yours is the choice. Which segment to pursue, and what to give up in order to serve it, is the judgement being assessed.
Frequently Asked Questions
How many segments should I identify?
Three to five candidates, then justify targeting one or two. Identifying eight and targeting all of them is not a strategy.
Can I combine segmentation bases?
Yes, and the strongest answers do. A behavioural base anchored by a demographic or geographic qualifier usually produces the most actionable segment.
Do I need primary research to segment?
Not usually for an assignment. Secondary sources such as market reports, company data and published surveys are normally expected and accepted.
Where does STP sit in a SOSTAC plan?
In strategy. Putting it in tactics is a common structural error, because the marketing mix is what implements the position STP defines.
Is a perceptual map required?
Rarely required, often rewarded, but only if the axes are meaningful and you interpret it in prose rather than leaving it to speak for itself.
How do I write STP for a not-for-profit?
The same logic applies with different currency. Segments are beneficiary or donor groups, and positioning competes for attention and funding rather than sales.
Your Next Step Today
Write your positioning statement using the five-part structure, then check whether the final clause names a real reason to believe. If it does not, the statement is copy rather than strategy, and everything you build on it inherits that weakness.
Our marketing writers build STP sections around real market data and current brand cases, written to your rubric and referencing style.
Trusted Sources
- American Marketing Association, definition of marketing. Accessed 11 August 2026.
- Chartered Institute of Marketing. Accessed 11 August 2026.
- Office for National Statistics, free UK demographic and consumer data for sizing segments. Accessed 11 August 2026.
- Mintel, market intelligence commonly licensed through university libraries. Accessed 11 August 2026.
- University of Southern California, Theoretical Framework, on applying models analytically. Accessed 11 August 2026.
- Kotler P and Armstrong G, Principles of Marketing (Pearson), the standard reference for the STP sequence and segment evaluation criteria.
Marking criteria differ by module. Where this guide and your assignment brief differ, follow the brief.
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