###### 3 main types
There are totally different types of PMs:
1.  Core
2.  Platform
3.  Growth

These different types of PMs have different objectives, ways of working, and calendars. Plus, leaders in PM generally specialize in one to advance. So, choosing correctly is important.

###### Details of 3 types
Type 1: **Core PMs** 
Core PMs lead the product teams that you traditionally think of. Their ownership is one part of the product. Their northstar is balancing everything for it. They work with consistent stakeholders, but also field requests from other teams for their surface.

Type 2: **Platform PMs** 
These are the PMs building internal APIs, tools, and other enabling layers for other teams. They field requests for their platform all the time across the business. Their north star is balancing everything for the platform.

Type 3: **Growth PMs** 
These PMs do not own a surface or platform. Instead, their north star is to build across the product to move specific metrics, like user growth, or profitability. Rather than fielding requests, they tend to make more requests of teams owning a surface.

###### Ways of working 
- User driven —> core PM 
- Capability driven —> platform PM 
- Metrics driven —> growth PM
Specialization pays off in impact and career growth.