Amazon PPC glossary
Loss-leader campaign
A campaign that accepts a loss on one product or keyword to drive a benefit measured elsewhere, in cross-sell traffic, in a related product's rank, or in wider category presence.
Where it matters most: Book 5, The Advanced PPC Clarity Guide, in the chapter “Reaching for an Aggressive Tactic, or Staying Simple.”
Go deeper
The glossary gives you the one-line answer. The Advanced PPC Clarity Guide explains why it matters and what to do about it.