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Understanding Customer Acquisition Cost (CAC)

Apr 15, 2025

Lecture Notes: Understanding Customer Acquisition Cost (CAC) in Marketing Campaigns

Key Concepts

  • Customer Acquisition Cost (CAC): The cost associated with acquiring a paying customer.
  • Funnel: The process of converting website visitors into paying customers.
  • Freemium Product: A product that starts as a free trial with the goal of converting users to paying customers.

Example Scenario: Google AdWords Campaign

  • Cost per Click (CPC): $0.50
  • Visitors Acquired: 10,000 people
  • Total Cost: $0.50 * 10,000 = $5,000*

Funnel Conversion Rates

  1. Trial Activation:
    • 5% of visitors take the trial
    • Resulting in 500 trial users
  2. Paid Conversion:
    • 10% of trial users convert to paying customers
    • Resulting in 50 paying customers

Calculating CAC

  • Formula: Total spend / Number of paying customers
  • Calculation: $5,000 / 50 = $100 per paying customer

Insights

  • Marketing Channels: The example is based on a web/mobile channel (PPC) but applies universally across different channels like direct mail, TV, or radio.
  • Importance of CAC: Understanding and optimizing the CAC is crucial for startups and businesses to ensure they are effectively acquiring customers without overspending.

Conclusion

  • Calculating and understanding customer acquisition cost is essential for any marketing strategy. It helps determine how much it costs to turn potential customers into actual paying customers, which is vital for the success and sustainability of a business.