Amazon PPC glossary
COSMO
Amazon's system for matching search queries to relevant listings using AI, going beyond exact keyword matching to also weigh a listing's images, content, and past shopper behavior.
Where it matters most: Book 5, The Advanced PPC Clarity Guide, in the chapter “The AI Shift, Alexa for Shopping and Beyond.”
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.