The document outlines the lean startup approach for starting a business. It discusses how the traditional startup process can involve months or years of guessing and high risks of failure. The lean startup approach advocates building minimal viable products and using customer feedback and data to test assumptions and pivot if needed, reducing costs and risks compared to traditional guessing. Examples of companies that used this approach, like Google and Facebook, are provided.

1. How to start a business
The lean Startup approach
● Startup problems
● Lean approach
● Examples
● Conclusions
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2. Startup problems
● Startup: company searching for a business model and new
markets
● Examples:
language course, online groceries, modify website
● Could take months or years,
cost potentially high
● High risk of failure
(no more funding)
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3. Solution: The lean approach
● Build only what the customers want
● How ?
- No guessing
- Measure assumptions: MVP and user testing
- data-driven choices
- pivoting
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4. Application
● Language course
Check first which one and where
● Online groceries
measure if working first, even with loss of money
● Website new features
A/B testing
● Real examples:
google, facebook, groupon.com
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5. Conclusions
● Don't build things because you think they are
useful for the customers
● Follow the methodology
● “Learn from the mistakes of others.
You can’t live long enough to make
them all yourself.”
Eleanor Roosevelt
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