product life cycle and decisions about extension strategies

3.3 The Marketing Mix – Product Portfolio Analysis

What is a Product Portfolio?

Think of a product portfolio like a fruit basket 🍎🍌🍇. Each fruit (product) has a different size, taste and shelf‑life. A company’s portfolio is the mix of all these products that it sells. Managing this mix helps the company grow, stay competitive and keep customers happy.

The Product Life Cycle (PLC)

The PLC shows how a product moves through four stages, just like a plant grows from seed to fruit to seed again.

StageKey FeaturesMarketing Focus
IntroductionLow sales, high costs, brand awareness building.Promote, educate, create demand.
GrowthRapid sales increase, competitors enter.Scale up, strengthen brand, defend market share.
MaturitySales peak, market saturation.Differentiate, cost control, extend life.
DeclineSales fall, profits shrink.Harvest, discontinue, or revamp.

Analogy: The Life of a Plant

Just as a seed sprouts, grows, bears fruit and eventually dies, a product follows a similar path. Understanding this helps managers decide when to add new features, target new customers or retire a product.

Extension Strategies

When a product reaches a certain PLC stage, companies can use extension strategies to keep it alive or grow the business.

  1. Market Penetration – sell more of the same product to existing customers. Example: Apple offers discounts on iPhones to boost sales in a saturated market.

  2. Product Development – add new features or versions. Example: iPhone 14 adds a better camera and 5G support.

  3. Market Development – sell the product in new geographic or demographic markets. Example: Samsung launches a budget phone for emerging markets.

  4. Diversification – create a new product for a new market. Example: Google launched Pixel phones after being a software company.

Exam Tip Box

Remember: When answering questions about the PLC, always link each stage to the appropriate extension strategy. Use the BCG matrix or Ansoff matrix to illustrate how companies decide which strategy to use.

Use clear headings, bullet points and real‑world examples to show you understand the concepts.

BCG Product Portfolio Matrix

The BCG matrix helps companies decide where to invest. It plots products on two axes: Market Growth and Relative Market Share.

Market Growth ↑HighLow
High Market Share →Stars ⭐Cash Cows 💰
Low Market Share →Question Marks ❓Dogs 🐶

Quick Check

Match the product to the correct BCG quadrant:

  1. New electric car with high growth potential – Stars

  2. Classic soft drink with large market share – Cash Cows

  3. New gaming console in a niche market – Question Marks

  4. Obsolete printer model – Dogs

Wrap‑Up & Study Checklist

  • Understand the four PLC stages and key characteristics.

  • Know the four extension strategies and when each is used.

  • Be able to plot a product on the BCG matrix and explain the implications.

  • Use real‑world examples (e.g., iPhone, Samsung Galaxy, Google Pixel) to illustrate concepts.

  • Practice exam questions: describe a product’s PLC and suggest suitable extension strategies.