[diab0lic]

> or you have to physically segregate inventory by vendor, which is not practical.

The headline seems to indicate that the geniuses in logistics at Amazon have figured out how to make it practical!

[londons_explore]

My understanding is every individual item is tracked in an Amazon warehouse - so Amazon knows that the 67th item in a box from supplier X was shipped to user Y.

They don't just track quantities of SKU's like most other retailers.