IB Business Management HLTopic 4 — MarketingPaper 1 & 2Core idea~11 min read
Product and the Product Life Cycle
The marketing mix is the set of decisions a business actually makes: what to sell, what to charge, where to sell it and how to tell people about it. Product comes first, because everything else is built on top of it. And no product sells forever — the life cycle shows you why.
📘 What you need to know
The marketing mix is seven elements: product, price, place, promotion, people, process and physical evidence.
The last three Ps were added because services cannot be judged before they are bought.
Product covers features, design, quality, branding and packaging.
The product life cycle has five stages: development, introduction, growth, maturity, decline.
Cash flow is negative early (you are spending, not earning), turns positive in growth and maturity, then falls away.
The marketing strategy has to change at every stage — the same advertising will not work in introduction and maturity.
Extension strategies stretch the life of a product that has reached decline. They can be product-related or promotion-related.
The seven Ps in one picture
Four Ps were enough when businesses mostly sold objects. Once services took over, three more were needed — because when you buy a haircut or a flight, you cannot inspect it first. You judge the staff, the system and the surroundings instead.
Change one P and the others usually have to move too. Raise the price and the packaging, the promotion and the shop itself all have to justify it.
Product: more than the thing in the box
The product element covers everything about what you are selling: its features, how it is designed, how well it is made, what it is called and how it is packaged. All of it has one job — meeting what customers expect.
Notice that a single product can be split into versions aimed at different segments. A bank does not offer one current account; it offers a basic one, a student one and a fee-paying premium one with travel insurance attached. Same service, three products, three segments.
The product life cycle
Every product goes through the same journey from first idea to final sale. Knowing which stage you are in tells you what to do next.
The gap between the two ideas is where marks are won: cash flow is at its worst while sales are still zero, and turns positive well after the launch party is over.
Stage
What is happening
Cash flow and strategy
Development
Ideas generated and screened, product designed and tested. Nothing is on sale yet
Cash flow negative. Heavy spending on research, market research and testing, with no revenue at all
Introduction
The product launches. Sales grow slowly because hardly anyone knows it exists
Still negative. Heavy promotion and distribution costs. Price skimming if the product is new and rivals are few; penetration pricing if the market is crowded
Growth
Sales climb quickly. Competitors notice and start to copy
Cash flow turns positive as revenue rises and costs spread over more units. Focus shifts to differentiation, brand loyalty and getting into more shops
Maturity
Sales peak and flatten. Most people who want one already have one
Most profitable stage. Economies of scale cut costs. Advertising reminds rather than informs; promotional pricing and small upgrades defend market share
Decline
Sales fall as the product becomes outdated or replaced
Cash flow turns negative again. Options: cut price to clear stock, find a new use, extend the life, or withdraw the product
Do not treat the curve as a law of nature. Souvenirs for a one-off event live for weeks. Some chocolate bars have been in maturity for over a century. The shape is a tool for thinking, not a prediction.
Extension strategies
When sales start to slide, a business does not have to accept it. Extension strategies are attempts to stretch the life of the product before writing it off.
Once customers have moved on, an extension is much harder. Businesses that watch the curve act while the product is still selling well.
Two families of extension strategy
Product-related — change the product itself. Improvements (a new version each year with better features), line extensions (a diet version, a zero-sugar version, a mini size), or repositioning (aiming the same product at a different market, such as moving from home users to business customers).
Promotion-related — leave the product alone and change how it is sold. New advertising that refreshes a familiar brand, price promotions during a big shopping event, or sales promotions such as a loyalty card offering a free item after six purchases.
The evaluation nobody writes: a third option is to do neither. Withdrawing a declining product saves the promotion and development spending, and frees managers to concentrate on the rest of the portfolio. Say this and you stand out.
Worked examples
WORKED EXAMPLE 1
Sales of a fitness tracker rose quickly for two years and have now been flat for eight months. Advertising costs have been cut and unit costs have fallen. Identify the life cycle stage and justify your answer. [4 marks]
Step 1: Read the sales pattern
Sales rose fast, then flattened. Rapid growth has stopped.
Step 2: Read the cost clues
Lower unit costs suggest economies of scale, and cut advertising suggests the product no longer needs introducing.
Step 3: Match to the stageMaturityAdd the “so what”: this is the most profitable stage, so the business should protect market share and start planning an extension now.
WORKED EXAMPLE 2
Sales of a breakfast cereal have fallen for three years running. Recommend an extension strategy. [6 marks]
Step 1: Option A, product-related
A line extension, such as a lower-sugar version, taps into changing tastes but costs money to develop and test.
Step 2: Option B, promotion-related
New advertising and a price promotion are far cheaper and quicker, but only work if the product itself is still wanted.
Step 3: Option C, do nothing
Withdraw it and put the money behind healthier products in the range.
Line extension, if research shows the fall is about healthThe judgement depends on why sales are falling. Say that, and the condition earns the top band.
💡 Exam tip
If asked to draw the curve, label both axes (sales and time) and all five stages. Unlabelled diagrams score little.
Never say “cash flow is positive because sales are high” without checking costs. In introduction, both are high.
Use the case’s own clues — advertising spend, unit costs, competitor entry — to identify the stage, not just the sales line.
Extension strategies should be timed before decline bites. Say when, not just what.
Always offer withdrawal as an alternative in evaluation questions.
Link the stage to the other Ps: the price, promotion and place all change as the product ages.
⚠ Common mix-up
Sales falling does not always mean decline. It could be a seasonal dip or a one-off event.
The curve is not a timetable. Stages last wildly different amounts of time for different products.
Extension is not the same as a new product. Extending stretches what you already have.
Development is part of the cycle. Students often start at introduction and lose the negative cash flow marks.
Price skimming is not premium pricing. Skimming is a high price for a short period at launch.
Maturity is not failure. It is where most of the profit is actually made.
Up next: Managing a Product Portfolio — the Boston matrix, and how a business decides which products to feed and which to let go.
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