Marketing Management: Finding the Customer, Not Shouting at Them

A small bakery puts a sign on the pavement: "Fresh bread, 7 a.m." Nothing about that sign is clever. But somebody decided that people walking to the station want bread they can grab on the way, that they will pay a little more for it hot, that 7 a.m. is when they pass, and that the shop belongs on that street and not in a mall. The sign is the last, smallest decision in a chain of earlier ones.

That chain is marketing management. Advertising is the part you can see. The rest, deciding which customers, what to offer them, at what price, where to sell it and how to say it, is done before a single poster is printed. Companies that skip the chain make beautiful ads for products nobody needed.

What marketing is, and what it isn't

The American Marketing Association's definition is a mouthful: marketing is "the activity, set of institutions, and processes for creating, communicating, delivering, and exchanging offerings that have value for customers, clients, partners, and society at large." Read it for the verbs. Creating and delivering come before communicating. Advertising is one verb out of four.

The idea underneath is customer value: what the customer gets minus what the customer gives up. What they give up is not only the price. It is also time, effort, risk and the chance they chose wrong. A €2 coffee that takes fifteen minutes in a queue may deliver less value than a €3 coffee next door. Marketers say a customer buys when perceived benefits beat perceived costs, and better than the alternative does.

Marketing also is not manipulation by definition, and not "selling". Peter Drucker (Management, 1973) put the ideal this way in 1973: to know and understand the customer so well that the product fits and sells itself. Whether firms live up to that is a separate question; Consumer Behavior (34/58) looks at what works on people and what doesn't.

Segmentation: nobody buys for the average person

Customers differ. Some will pay double for a feature; others only look at price. If you design for the average, you serve nobody well. Segmentation splits a market into groups whose members are alike in what they want and unlike other groups. Wendell Smith proposed the idea in the Journal of Marketing in 1956.

You can cut by who people are (age, income, country), where they are, how they behave (heavy users, first-timers), or what they want (benefits sought). Textbooks add four tests for a useful segment: it can be measured, it is big enough to be worth serving, it can be reached, and you can act on it with a different offer. A segment of "people who feel optimistic on Tuesdays" fails them all.

Here is segmentation done by a computer. 120 invented customers sit on two dials: how price-sensitive they are, and how much they want features. A standard algorithm, k-means, puts the points into k groups. Move k and watch what the grouping buys you.

With one segment, the "average customer" sits in the middle of the plot where almost nobody is. Going from 1 to 4 removes most of the spread; going from 4 to 6 buys little. That bend, the "elbow", is how analysts judge the number of segments worth having. The maths does not decide which segments the business can serve: that is a judgement, and a cost.

Targeting and positioning: a place in the customer's mind

Targeting is choosing which segments you will serve, and which you will let go. Positioning is the place you want in those customers' minds against the alternatives. The idea became famous through Al Ries and Jack Trout's 1981 book Positioning: The Battle for Your Mind. A position is relative: "cheaper than the leader", "the one for serious runners".

Marketers draw it as a perceptual map: two attributes that matter to customers on the axes, brands as points, customers' ideal products as a cloud. A brand tends to win the customers closest to it. That gives a rule: a good position is near many ideal points and far from rivals. Drag your brand (or use the sliders) and see.

The map shows a trade-off, not an answer. Where the customers are, the rivals are too, so you split the crowd. Where nobody is, you may win everyone nearby, but there may be nobody there. Press "Find the best open spot" and compare it with the middle: the search tells you where on this invented map a new brand would win most, and the number is only as good as the invented customers behind it.

The marketing mix: four Ps, and the case against them

Once you know whom you serve and the position, you have levers. E. Jerome McCarthy, in Basic Marketing (1960), grouped them as the four Ps: Product (what it is and does), Price (what it costs and how it is paid), Place (where and how the customer can get it) and Promotion (how you tell them). Neil Borden had popularised the phrase "marketing mix" in a 1964 article. The mix must fit together: a luxury watch at a discount-store price in a clearance bin sends two messages at once.

The four Ps have lasted because they are easy to remember. They also have critics. Services (a haircut, a bank) add people, process and physical evidence, which Bernard Booms and Mary Jo Bitner turned into the seven Ps in 1981. Robert Lauterborn argued in 1990 that the Ps are the seller's view and should be flipped to the buyer's: customer solution, cost, convenience, communication (the four Cs). Others say the list is a checklist, not a theory, and ignores relationships, brands and digital platforms. Most textbooks, Kotler and Keller's included, still teach it as the starting frame and add to it.

Seller's P	Buyer's C	The question it asks
Product	Customer solution	What problem does it solve for them?
Price	Cost	What does it really cost them, in time and risk too?
Place	Convenience	How easy is it to get?
Promotion	Communication	Is it a two-way conversation, not a broadcast?

Customer lifetime value: what a customer is worth

A bakery that thinks of a sale as €4 sees a €4 customer. A bakery that knows the customer comes back most weeks for years sees a customer worth hundreds. Customer lifetime value (CLV) is the total margin a customer is expected to bring across all the years they stay, in today's money.

The simplest version needs three numbers: the margin a customer brings each year (m), the share who stay from one year to the next (the retention rate, r) and a discount rate (d) because next year's money is worth less than today's. If margin is collected at the start of each year the customer is active:

Worked: m = 120, r = 80%, d = 10% gives 120 × 1.1 ÷ 0.3 = 440. Raise retention to 90% and it jumps to 660. Five points of retention change the value far more than five points of margin, which is why firms obsess over keeping customers. Compare CLV with what it cost to win them (CAC): a common rule of thumb is that CLV should be a few times CAC, but it is a rule of thumb, not a law.

The funnel: a useful lie

The funnel pictures customers falling out stage by stage: aware, interested, considering, buying, buying again. The idea is old: advertising writer E. St. Elmo Lewis is credited with an attention, interest, desire, action sequence around 1898, later called AIDA. A funnel is useful because stage rates multiply, so you can see where the big drops are and what a gain at one stage is worth at the end.

The funnel is a lie because people do not travel in a line. They loop back, skip stages, buy on impulse or never "consider" at all. Consultants at McKinsey drew a loop instead of a funnel in 2009, and the Ehrenberg-Bass school argues that most buying is far less deliberate than the funnel implies (Brand Management, 34/60, picks that up). Treat the funnel as a bookkeeping device, not a picture of a mind.

Marketing myopia: you are in the customer's business

The most reprinted article in the field is Theodore Levitt's "Marketing Myopia" (Harvard Business Review, July–August 1960). His claim: industries decline not because the market saturates but because managers define the business by the product, not by the need. His famous example was the railroads, which, he said, thought they were in the railroad business rather than the transportation business, and let aeroplanes and cars take the customer. A line Levitt popularised, "people don't want a quarter-inch drill, they want a quarter-inch hole", makes the same point in one sentence.

The honest caveat: Levitt's story is a lesson, not a law. Railroads were heavily regulated, and a firm that stretches its definition too far ("we are in the energy business") can wander into things it does badly. The enduring part is the question to ask: what job is the customer hiring this for, and what else can do that job?

What a graduate just sees

• Every ad sits on top of a decision about who it is for. If you can't say whom, the ad is noise.
• "The average customer" is a fiction; there are groups, and serving one well means saying no to another.
• A product is a position: you can describe it by where it sits against rivals on what customers care about.
• Price, product, place and message have to tell one story. When they disagree, customers believe the price.
• Customers are worth years of margin, so keeping one is often cheaper than winning a new one.
• A funnel shows where the leaks are, but the customer's real path loops and skips.
• Ask what need a product serves, not what the product is; the need outlives the product.

Where it shows up next

• Consumer Behavior (34/58): why people actually choose, which is rarely how the funnel says.
• Marketing Research & Analytics (34/59): how to find segments and measure what a campaign did.
• Brand Management (34/60) and Pricing (34/61): positioning made lasting, and the one P that brings money in.
• Digital Marketing (34/62) and Go-to-Market (34/63): the funnel and the mix on search, social and launch plans.
• In the world: product managers choosing a launch segment, a founder choosing a first customer, a nonprofit asking who a campaign is really for.

If you want to go deeper

• 📘 Textbook. Philip Kotler, Kevin Lane Keller and Alexander Chernev, Marketing Management (Pearson, 16th edition). The standard text for the course; best for its frameworks and cases.
• 📘 Gentler. Seth Godin, This Is Marketing (2018): short, readable, about serving a small group well.
• 🌐 Free course. MIT OpenCourseWare 15.810 Marketing Management (Sloan, Fall 2004, with lecture notes and cases).