Sun.Jun 22, 2025

Remove chatgpt-certifications
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From ChatGPT to Instagram to Uber: The quiet architect behind the world’s most popular products | Peter Deng

Lenny Rachitsky

The unexpected value of growth teams: At Instagram, Uber, and ChatGPT, Peter’s first move was building a growth team—not for growth hacking but to force measurement rigor and uncover what actually matters. No ChatGPT summary of user interviews can replace being in the room, hearing the tone, feeling the frustration.

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