A product is like a living organism. It needs different care at different ages.
1The Chaos of Introduction
This is the 'Wild West'. You have no data, high uncertainty, and limited time. The PM's role here is to be a detective, searching for the signal in the noise through rapid prototyping.
2The Scaling Engine
During Growth, the product takes off. The challenge is no longer 'What do we build?' but 'How do we keep it from breaking?' and 'How do we reach the next 10 million users?'.
3The Graceful Sunset
Not every product lasts forever. Sometimes the best PM move is to 'sunset' a declining product to free up resources for a new, high-growth opportunity. Knowing when to quit is a superpower.
