1.9

Segmentation & Targeting

Dividing a market into groups expected to behave differently, then choosing which of those groups to serve.

Wendell Smith (1956); formalised as the S and T of STP by Philip Kotler

What it does

Forces an explicit answer to who you are and are not for, and makes the trade-off visible — every segment you name is a set of buyers you have chosen to under-serve. As a planning discipline it prevents the default failure of addressing everyone with no one in mind, and it is how media is actually bought.

When it breaks

It breaks as a description of who buys. Competing brands within a category are repeatedly measured as having near-identical buyer profiles: the segments differ in size, not in kind. A segmentation that assigns each brand its own distinct demographic or attitudinal buyer is describing a market that measurement does not find. It survives as a targeting and media convenience, not as a theory of demand.

Case

Kennedy and Ehrenberg compared the buyer profiles of competing brands across a wide range of categories and found them to differ far less than segmentation practice assumes — brands within a category are bought by much the same kinds of people, in proportion to how many buyers each brand has.

Kennedy & Ehrenberg — Brand user profiles seldom change and seldom differ ↗

Diagram — not yet drawn

Two competing brands' buyer profiles plotted on the same axes as overlapping clouds; the clouds sit on top of each other and differ only in size, with the tiny non-overlapping crescents labelled as everything segmentation claims to find.

In the wild

Unvetted · not part of the tier assessment

What has been written about this tool in the last twelve months. Machine-retrieved and unchecked — everything above this line was checked.

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