Learn the case interview basics, practice with 200+ cases, and benefit from extensive test materials, and interactive self-study tools.
Topic Overview
Topic Overview
Interview First Aid
Get ready for your case interview with our Starter's Guide to Case Interview Prep. Learn everything you need to crack the case and start a career in consulting.
How to Start The Case Interview Preparation
Conduct Mock Interviews with Peers and Coaches
Find out how to crack any case in your consulting job interview with our Case Interview Basics. We help you to get ready for a career as top consultant!
Preparation for Case Studies
Approaching a Case
Interviewer-Led vs Candidate-Led Cases
Note-taking in Case Interviews
You want to ace the personal fit interview? We got what you need to display your personality. Start your consulting career with our Case Interview Basics!
Personal Fit Interview
Key Questions in the Personal Fit Interview
The STAR Method to Ace Your Personal Fit Interview
Get ready for online assessments such as the McKinsey Imbellus Game, BCG Online Case or Bain Sova Test during your interview in consulting.
BCG Online Case
McKinsey Imbellus Game
Bain Sova Test
Pymetrics Game Assessment
Case Cracking
Identifying your case type is the first and most crucial step to ace your case interview. Learn how to crack consulting cases with our Case Interview Basics.
Market Sizing
Market Entry
Profitability Cases
Growth Strategy
M&A Cases
Competitive Response
Pricing
Valuation
Brainteaser
Use the best consulting techniques to structure your thoughts and ace your case interview. Learn how to crack consulting cases in our Case Interview Basics
Issue Tree
MECE Principle
Pyramid Principle
Porter's Five Forces
4C Framework
4P Framework
2x2 Matrices and the BCG Matrix
The Stacey Matrix
Influence Model
ADKAR Model
McKinsey Growth Pyramid
Practice the basics like math skills and reading data charts to ace your case interview. Learn how to crack cases in our Case Interview Basics!
Charts and Data in Case Interviews
Why Math Matters
Math Skills Required in Case Interviews
Fast Math
Important Facts
Correlation and Causality
Qualitative and Quantitative Analysis
ROI and ROAS
Business Concepts
Back to overview

Product Life Cycle

The product life cycle is a way to map the common stages a product undergoes throughout its lifespan. The product life cycle is typically divided into 4 different stages, each having specific strategic decisions affecting profits and revenues:

(1) Development: In the development phase, the product has just been finished and the most important facts and figures have been determined.

(2) Introduction: In the first phase, the product is introduced. Normally, at this stage, there are a few competitors and customers. Therefore, sales and profit are low and the risk that the product will not succeed is high. In order to boost sales, the focus lies heavily on promotion activities.

(3) Growth: Products that succeed in addressing customer’s needs will lead to an increase in sales. Advertisement is still a key component to promote further growth.

(4) Maturity: At this stage, the product can be seen as well established and widely accepted within the targeted customer group. Profits are high and risks are low. Typically, in this phase, competition increases. To keep the market position and expand this phase, companies often employ strategies such as the introduction of complementary or updated products or simply invest in marketing activities.

(5) Decline: At this point, the product may not fulfill the current needs of the customers, and sales start to decline. The important decision at this stage is deciding when to take the product off market, such that the client optimizes financial gains and minimizes losses due to time and investment.

The Product Life Cycle

Key Takeaways:

  • The product life cycle describes the 4 phases a product goes through.
  • These phases can be divided into Introduction, Growth, Maturity, and Decline.
  • Each phase has an impact on profit, sales, and the company’s strategic decisions.
How likely are you to recommend us to a friend or fellow student?
0 = Not likely
10 = Very likely
You are a true consultant! Thank you for consulting us on how to make PrepLounge even better!