I recommend that all start-ups learn how their suppliers’ businesses operate. You should learn about their manufacturing and production processes and find out who does what in the business.

I recommend that all start-ups learn how their suppliers’ businesses operate. You should learn about their manufacturing and production processes and find out who does what in the business.
The key thing to remember here is that Amazon has scaled e-commerce to a degree that most small businesses might not be able to reach on their own.