The 4Ps of marketing: definition, example and limits in interviews

The 4Ps are a classification put forward by E. Jerome McCarthy in 1960 in his textbook "Basic Marketing", then popularised by Philip Kotler. The four words all start with a P: product, price, place, promotion.

• Product. What is sold: its features, quality, range, packaging, brand, and the services that come with it.
• Price. The list price, but also discounts, payment terms and the form of the price, one-off purchase or subscription.
• Place. Where and how the customer buys: in store, online, through resellers, with what shelf presence.
• Promotion. How the customer learns that the offer exists and why they would choose it: advertising, promotions, social media, sales force.

The underlying idea is that none of these decisions is made alone. A premium product sold in hypermarkets with permanent promotions sends contradictory signals. The job is to align the four.

In consulting interviews, the framework comes up in product launch cases and in disappointing sales cases, when you need to understand why an offer is not taking off.

The tree puts the offer at the root and the four decisions as branches. What it does not show, and what you need to keep in mind, is the target customer, who is chosen beforehand and serves as the yardstick for judging each branch. The same pricing decision is right for one segment and wrong for another.

To read the tree, ask two questions of each branch: does this choice suit the target customer, and is it consistent with the other three?

Here is the prompt. Kléa, a soap brand, launched a solid shampoo in supermarkets six months ago. The target was 100,000 units a month. Sales are at 30,000. Management is considering a price cut. What do you think?

The customer first. You ask who the product is for. Answer: people who want to reduce their plastic waste and already buy natural products.

Product. An 80-gram bar that lasts as long as two bottles of liquid shampoo. Consumer tests are good: those who try it buy it again. The product is not the issue.

Price. €8, against €4 for a standard bottle. Per wash, the price is therefore the same. On the shelf it looks twice as expensive, and nothing on the packaging explains the equivalence.

Place. The product is in 500 stores, as planned. You ask where it is placed. In 400 stores, it is in the shampoo aisle, among €4 bottles. In 100 stores, it is in the natural products aisle.

Promotion. €1M of advertising, focused on the absence of plastic. It says nothing about how long the product lasts.

Crossing the data. You ask for sales by location. The interviewer gives the numbers: 40 units per store per month in the shampoo aisle, 140 in the natural products aisle. You check: 400 x 40 + 100 x 140 = 30,000. It adds up.

Recommendation. Do not cut the price. The product sells more than three times better where the target customer sees it. If the other 400 stores reached the same level, sales would rise to 70,000 units. So first negotiate the change of aisle, then write "equals two bottles" on the packaging and in the advertising to deal with price perception. Cutting the price would have reduced the margin without fixing either of these two problems.

The framework breaks first because it starts from the company and not from the customer. It lists what the seller decides. It asks neither who buys, nor why, nor what competitors are doing. In the example, the decisive question, who the product is for, is in none of the four Ps. Applying the 4Ps without having chosen a target is like adjusting four dials without knowing for whom.

It also breaks because it sorts without connecting. Kléa's problem was neither in price nor in place taken on its own, but in their combination: a price that is justified, placed where nobody can understand it. A candidate who goes through the four Ps one after the other, ending each with "nothing to report", misses it.

Third limit: it was designed for consumer goods. For a service, the experience depends on the people who deliver it and how the service unfolds, which led to versions extended to seven Ps. For software sold by subscription, the line between product, price and place becomes blurry.

Finally, it quantifies nothing. It does not say which P has the most effect on sales or what a change costs. Without numbers, the recommendation remains an opinion.

Start with the customer, then use the four Ps as questions to ask about them. Who are we targeting? Does the product meet what they are looking for? Does the price seem fair against what they buy today? Do they find it where they shop? Have they heard the right reason to buy it? Phrased this way, the framework becomes a customer journey, and inconsistencies jump out.

On a disappointing sales case, locate before you explain. A product's in-store sales break down into the number of stores times sales per store. This small driver tree tells you straight away whether the problem is insufficient presence or a product that is not moving. The 4Ps come next, to look for the cause.

Look for gaps inside the data. Two locations, two regions, two retailers: as soon as a subgroup behaves differently, you have a lead more solid than any general reasoning.

For the price P, the framework is not enough: setting a price calls for separate reasoning, detailed on the pricing page. And for a launch, remember to check that the market exists, as in a market entry case.

The FrameLab course does not present the 4Ps as a case structure. It files them among the lenses that help you forget nothing when discussing an offer, to be inserted into a structure built from the client's question. You can check on the real interview cases: a product launch is almost always structured around the customer, the market and the numbers, with the 4Ps in the background.

A speciality coffee brand, sold at €12 a bag to demanding enthusiasts, wants to accelerate. Its plan: enter hypermarkets, launch a "buy two bags, get the third free" promotion and advertise on television. The product does not change. What inconsistencies do you see, and what would you suggest?