Most Amazon advertising is keyword-based — you bid on what someone typed into the search bar. ASIN targeting, also called Product Attribute Targeting (PAT), works differently: instead of targeting a search term, you target a specific product or category, and your ad shows directly on that product’s detail page.
What it actually means in practice
Set up a PAT campaign targeting a competitor’s ASIN, and when a shopper is already looking at that competitor’s listing — reading the bullet points, checking the price, close to a decision — your ad appears alongside it. You’re not competing for their attention before they’ve decided what they want; you’re catching them at the exact moment they’re deciding between options.
Why the intent is different from keyword search
A shopper searching “coal tar soap” hasn’t chosen a product yet. A shopper looking at a specific competitor’s coal tar soap listing has already narrowed the field to serious contenders — the purchase intent at that point is considerably higher, even though they haven’t clicked your listing yet.
Where PAT campaigns actually show up
PAT campaigns get the large majority of their impressions from the Product Pages placement — the placement type that appears on competitor detail pages, as opposed to Top of Search or Rest of Search, which are built around search-result positions. Understanding this connection matters for bidding: a PAT campaign judged against a Top-of-Search ACoS benchmark is being measured against the wrong yardstick.
When PAT is worth running
PAT works best against competitors whose listings are genuinely comparable — similar price point, similar positioning — where a shopper on the fence has a real reason to switch. It’s less effective aimed at a dominant, much cheaper, or clearly differentiated competitor, where the shopper on that page was unlikely to switch regardless of what ad they saw next to it.
Used deliberately, category and competitor ASIN targeting is one of the few PPC tools that lets you choose exactly where in someone else’s decision process you want to appear — which keyword targeting, by design, can’t offer.