Keywords on Amazon are the words and phrases shoppers type into the search bar when looking for products. As a seller, the keywords you include in your product listing determine whether Amazon’s search system shows your product to those shoppers. They work similarly to SEO keywords on Google, but with mechanics specific to Amazon’s marketplace.
How Amazon Uses Keywords to Surface Products
When a shopper searches for something like “stainless steel water bottle,” Amazon’s system scans millions of listings to find products that match. Keywords in your listing are a primary signal telling Amazon what your product is and which searches it should appear in. If your listing never mentions “water bottle,” it won’t show up for that search, no matter how great the product is.
Amazon’s search system has evolved well beyond simple word matching. The platform now uses an AI-powered engine called COSMO that builds connections between what customers search, what they actually want, and which products fit those intentions. A search for “shoes for a wedding” doesn’t just surface products with those exact words in the title. The system infers that the shopper probably wants formal dress shoes and returns results accordingly. This means keyword strategy is less about cramming in exact phrases and more about clearly communicating what your product does, who it’s for, and how people use it.
Where Keywords Appear in a Listing
Amazon gives sellers two broad places to include keywords: the visible parts of the listing that shoppers see, and hidden fields that only Amazon’s algorithm reads.
Frontend Keywords
These are the keywords woven into the parts of your listing that shoppers actually read:
- Product title: The most important spot for your primary keywords. A title like “Insulated Stainless Steel Water Bottle, 32 oz, BPA-Free, Keeps Drinks Cold 24 Hours” covers several terms a shopper might search.
- Bullet points: The five feature bullets below the title. These let you work in additional keywords while describing your product’s benefits and specs.
- Product description: The longer text section further down the page, where you can include more detail and naturally incorporate additional search terms.
Backend Keywords
Backend keywords (also called search terms) are hidden fields in your Seller Central account that shoppers never see, but Amazon’s algorithm reads when deciding which searches your product is relevant for. This is where you put useful search terms that didn’t fit naturally into your title or bullets. For example, if your product is a “laptop stand,” you might add backend terms like “notebook riser” or “computer holder” to capture alternate phrasing.
The backend search terms field has a limit of 500 characters. As long as a keyword appears once, either on the frontend or in the backend, your listing can rank for it. Repeating the same keyword in both places provides no extra benefit.
Discovery Attributes
When you create a listing, Amazon’s product template includes fields like subject matter, target audience, and intended use. These discovery attributes feed directly into how Amazon categorizes and surfaces your product. Filling them out accurately is another form of keyword optimization that many sellers overlook.
Rules for Backend Keywords
Amazon has specific rules about what you can and cannot include in your backend search terms:
- No competitor brand names: You’re prohibited from using another company’s trademark as a backend keyword. Doing so can result in listing suppression or account penalties.
- No stop words: Words like “and,” “or,” “the,” “in,” and “with” waste character space. Amazon ignores them in search queries anyway.
- No temporary claims: Phrases like “new,” “on sale,” or “limited time” are not allowed because they describe fleeting conditions, not the product itself.
- No repeated keywords: If a keyword already appears in your title or bullets, don’t repeat it in the backend. It won’t help your ranking and just eats into your 500-character limit.
One legacy field you might notice is “Platinum Keywords.” Amazon closed that program in 2016, so anything entered there has no effect on search visibility.
Organic Keywords vs. PPC Keywords
Keywords on Amazon serve two distinct purposes. Organic keywords are the terms embedded in your listing (title, bullets, description, backend) that help you appear in unpaid search results. PPC keywords are the terms you bid on in Amazon’s advertising platform (Sponsored Products, Sponsored Brands) to place paid ads in front of shoppers.
In advertising campaigns with manual targeting, Amazon offers three keyword match types that control how broadly your ads appear:
- Broad match: Your ad shows when the shopper’s query contains your keyword terms in any order, including synonyms, plurals, and related variations. Bidding on “leather wallet” could trigger your ad for “wallet made of leather” or “men’s leather billfold.”
- Phrase match: Your ad shows when the shopper’s query contains your keyword phrase in sequence, along with close variations like misspellings, plurals, and acronyms. “Leather wallet” would match “brown leather wallet” but not “wallet leather brown.”
- Exact match: Your ad shows only when the query matches your keyword precisely, though Amazon still accounts for plurals, misspellings, and translations. “Leather wallet” would match “leather wallets” but not “brown leather wallet.”
All three match types automatically handle plurals, misspellings, and translations, so you don’t need to list every possible variation manually.
How to Choose Effective Keywords
Start by thinking about what a real person would type when looking for your product. If you sell a silicone baking mat, shoppers might search “nonstick baking sheet,” “silicone cookie sheet liner,” or “reusable baking mat.” Each of those phrases represents a keyword opportunity.
Amazon’s own search bar is a free research tool. Start typing a word related to your product and note the autocomplete suggestions. Those suggestions reflect actual, high-volume searches. Third-party tools can estimate search volume for specific terms, but the autocomplete method gives you a reliable starting point at no cost.
Because Amazon’s AI now interprets intent rather than just matching words, your listing performs best when it reads naturally and accurately describes the product. Keyword stuffing, where you repeat the same terms or cram in unrelated phrases, can actually work against you. A title that reads like a list of search terms signals low quality to both shoppers and the algorithm. Write titles and bullets that a human would find clear and useful, then use backend fields to capture the alternate phrasings that didn’t fit naturally.
Pay attention to specificity. Broad terms like “shoes” have enormous competition. More specific phrases like “women’s waterproof hiking boots” attract fewer searches but reach shoppers with stronger purchase intent. A mix of broad and specific keywords typically gives the best coverage.
How Indexing Works
When Amazon “indexes” your listing for a keyword, it means the algorithm recognizes that term as relevant to your product and will consider showing your listing when someone searches for it. Being indexed doesn’t guarantee a high ranking. It just means you’re in the running. Your actual position in search results depends on additional factors like sales velocity, conversion rate, reviews, price competitiveness, and how well your listing matches the shopper’s intent.
You can check whether your listing is indexed for a specific keyword by searching for that term on Amazon along with your ASIN (the unique product identifier). If your product appears in the results, you’re indexed. If it doesn’t, the keyword may be missing from your listing entirely, or Amazon may not consider it relevant enough to your product category.