Product target
Bidding on a specific ASIN or product category instead of a search phrase.
Instead of buying a phrase, you buy placement on a product page — often a competitor's. Written as ASIN_SAME_AS="B0..." in bulk files.
Product targets can be harvested and negated like keywords, with one important exception: AutoPPC will not place an ASIN negative on a deliberate exact product target. Blocking a target you chose on purpose is almost always a mistake.