Segmenting by Purpose or Job-to-do

When planning new products, companies often start by segmenting their markets and positioning their merchandise accordingly. This segmentation involves either dividing the market into product categories, such as function or price, or dividing the customer base into target demographics, such as age, gender, education, or income level.

Unfortunately, neither way works very well, according to Harvard Business School professor Clayton Christensen, who notes that each year 30,000 new consumer products are launched—and 95 percent of them fail.

The problem is that consumers usually don't go about their shopping by conforming to particular segments. Rather, they take life as it comes. And when faced with a job that needs doing, they essentially "hire" a product to do that job. To that end, Christensen suggests that companies start segmenting their markets according to "jobs-to-be-done." It's a concept that he has been honing with several colleagues for more than a decade.

"The fact that you're 18 to 35 years old with a college degree does not cause you to buy a product," Christensen says. "It may be correlated with the decision, but it doesn't cause it. We developed this idea because we wanted to understand what causes us to buy a product, not what's correlated with it. We realized that the causal mechanism behind a purchase is, 'Oh, I've got a job to be done.' And it turns out that it's really effective in allowing a company to build products that people want to buy."

Christensen, who is planning to publish a book on the subject of jobs-to-be-done marketing, explains that there's an important difference between determining a product's function and its job. "Looking at the market from the function of a product really originates from your competitors or your own employees deciding what you need," he says. "Whereas the jobs-to-be-done point of view causes you to crawl into the skin of your customer and go with her as she goes about her day, always asking the question as she does something: Why did she do it that way?"

from :Clay Christensen's Milkshake Marketing as published in HBR

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