Cold start
The empty-site problem a new affiliate faces before any product feed is approved. Solved here with a managed feed that seeds live products on day one.
Amazon's product API gates access behind sales you have not made yet, so a brand-new affiliate site launches empty and a visitor who lands on a bare page never returns. A managed feed sidesteps this by populating a real, monetizable catalog from day one under your own partner tag, while your own access is approved in the background.