Market segmentation
Dividing a market into groups of buyers who want different things.
Is ‘people who buy often and stay loyal’ a demographic segment?
Segmentation splits a market into groups of buyers with similar needs, characteristics or behaviour, so each group can get an offer that fits it.
A bank branch in a college town offers one savings account to students, retired teachers and shop owners. Students want a zero balance, retired teachers want safety and a helpful clerk, and shop owners want quick cash deposits. One account cannot please all three.
In plain wordsSegmentation is splitting a market into groups of buyers who want similar things, so that each group can get an offer that fits it.
Exam definitionMarket segmentation is dividing a market into distinct groups of buyers who have different needs, characteristics or behaviour, and who might require separate products or marketing programmes (Kotler and Armstrong).
STP, segmentation, targeting and positioning, is the sequence at the heart of marketing strategy. Segmentation comes first.
Two ways to find segments. Start from descriptive characteristics (geographic, demographic, psychographic) and check whether the groups differ in needs or responses. Or start from behavioural responses (benefits sought, usage occasions, brands) and check whether each group has a distinct profile: do car buyers who want quality rather than a low price differ in age, income or lifestyle?
| Basis | Variables |
|---|---|
| Geographic | Country, region, state, city size, urban or rural, climate |
| Demographic | Age, gender, income, education, occupation, family size and life cycle, religion |
| Psychographic | Lifestyle, personality, values and interests; lifestyle is often measured by activities, interests and opinions (the AIO approach of William Wells and Douglas Tigert, 1971) |
| Behavioural | Occasions (weddings, birthdays), benefits sought (quality, service, economy), user status (non-user, ex-user, first-time user), usage rate (light, heavy), loyalty status (none, medium, strong), readiness stage (unaware, aware, intending to buy), attitude to the product |
Demographic variables are popular because they are linked to needs and easy to measure. Even a segment described by personality has to be linked back to demographics, to estimate its size and choose media. Psychographics adds psychology: people with the same demographics can have very different lifestyles and values.
Levels of segmentation run from one offer for everyone to one offer per person.
| Level | Approach | What it does | Example |
|---|---|---|---|
| Macro | Mass (undifferentiated) marketing | Mass production, distribution and promotion of one product for all buyers: ‘one size fits all’ | One advertisement for milk aimed at every household |
| Micro | Segment marketing | Different offers for large groups with similar wants, buying power and habits | Term insurance plans for young earners |
| Micro | Niche marketing | A narrower group with distinct needs, often willing to pay a premium | Luxury watches and sports cars |
| Micro | Local marketing | Programmes tailored to the needs of local customers: cities, neighbourhoods, stores | A neighbourhood bakery or florist |
| Micro | Individual marketing | The ultimate level: customised or one-to-one marketing | A custom-made wedding dress; made-to-order car interiors |
Business markets are segmented with a nested approach from Thomas Bonoma and Benson Shapiro (1983). It runs from demographic or firmographic variables (industry, company size, location) and operating variables (technology used, user status, customer capabilities) to purchasing approaches (purchasing policies, buying criteria, how buying is organised). Then come situational factors (urgency, order size) and the personal characteristics of the buyers.
Useful segments are measurable, substantial (large and profitable enough), accessible, differentiable (they respond differently) and actionable (the firm can design programmes for them). To illustrate the size test: a gym in Indore counts 4,000 working women aged 25 to 40 nearby. If 5% join at ₹1,500 a month, that is 200 members and ₹3 lakh a month.
Don't confuse segmentation with targeting. Segmentation describes the groups in a market; targeting chooses which of them to serve. Keep the bases apart too: usage rate and loyalty are behavioural variables, not demographic ones. The word micromarketing is used two ways. In the table above, every level below mass marketing is micro, as in Kotler and Keller. Kotler and Armstrong keep the word for local and individual marketing only.
Where it breaks. Segments drawn on paper may not behave differently. If every group responds the same way to price and promotion, separate programmes add cost without adding sales. Demographics are easy to measure but describe buyers rather than explain them; many marketers believe behavioural variables are the best starting point (Kotler and Armstrong).
For exams. Expect a variable to be matched to its basis, and the five tests of a useful segment.
Geographic, demographic, psychographic, behavioural.
1. Lifestyle measured by activities, interests and opinions belongs to which basis?
Not quite. The answer is “Psychographic”. The AIO approach of Wells and Tigert (1971) measures lifestyle, which is psychographic. It is not demographic: people with the same age and income can have very different lifestyles.
2. A bank branch sorts its customers into non-users, first-time users and ex-users of its mobile app. Which basis is it using?
Not quite. The answer is “Behavioural”. User status is a behavioural variable: it describes how people respond to the product. It is not demographic, because it says nothing about age, income or occupation.
3. A coaching centre in Patna counts 6,000 Class 12 students nearby. If 4% enrol at ₹1,000 a month, the monthly revenue is…
Not quite. The answer is “₹2.4 lakh”. 4% of 6,000 is 240 students, and 240 × ₹1,000 = ₹2,40,000, or ₹2.4 lakh. ₹60 lakh forgets that only 4% enrol. The estimate tests whether the segment is substantial.
- My view
Knowing the segment and knowing the assembly
Segmentation starts from the fact that different audiences need different offers. The Kuṟaḷ asks speakers who are pure and know the range of words to study the assembly before they speak. It is about addressing a gathering, not about dividing a market.
A reading offered for reflection, not a claim about what the authors meant.
“Those of pure mind who know the range of words should study the assembly and then speak.” அவையறிந்து ஆராய்ந்து சொல்லுக சொல்லின் தொகையறிந்த தூய்மை யவர். Tirukkuṟaḷ 711
About this text: TirukkuṟaḷDiscuss
What it addsA rule for speakers: those who know the range of words should study the assembly before they speak.
Where they differThe couplet is about addressing a gathering, not dividing a market. Segmentation adds bases such as geographic, demographic, psychographic and behavioural variables, and tests of a useful segment.
“Choose a brand you buy. Which segment do you think it is aiming at, and on which bases (geographic, demographic, psychographic, behavioural)?”
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- STP: segmentation, targeting and positioning; segmentation comes first.
- Levels run from mass marketing through segment and niche to local and individual marketing.
- Consumer bases: geographic, demographic, psychographic, behavioural; business markets use Bonoma and Shapiro's nested approach.
- Useful segments are measurable, substantial, accessible, differentiable and actionable.
Geographic, demographic, psychographic, behavioural.