How Amazon SEO Works

You probably think of Google when you think of search engines, but when it comes to shopping search, Amazon is king. A majority of US product searches now start on Amazon rather than a general search engine, and that share has only climbed over the years. If you sell physical products, Amazon SEO is arguably more important to your revenue than Google SEO.

Amazon SEO and Google SEO are similar in some ways and very different in others. Both are keyword based: your visibility depends on matching the terms shoppers search. Where they differ is what drives the ranking. Google weighs relevance, links, and authority. Amazon ranks primarily on which product is most likely to convert a search into a sale, because Amazon makes money when shoppers buy, not when they click.

From A9 to "A10": what actually changed

For years sellers talked about Amazon's "A9" algorithm, which leaned heavily on keyword relevance and raw sales velocity. The seller community now calls the evolved system "A10" (Amazon has never officially confirmed that name). The label matters less than the shift in weighting. Today the algorithm puts much more emphasis on:

• Conversion rate. If your listing converts well, you rank, almost regardless of how many keywords you've packed in. A listing that gets clicks but doesn't convert will sink.
• Click-through rate and engagement. Main image, title, price, reviews, and Prime badge all influence whether shoppers click and stay.
• Sales velocity and history. Consistent sales still beat occasional spikes.
• Customer satisfaction signals. Reviews, return rate, and seller feedback feed in. High sales with high returns can still hurt you.
• External traffic. Driving qualified outside traffic (Google, social, email, influencers) to your listing can support rank, though its weight is debated and it only helps if that traffic converts.

In my opinion this evolution makes Amazon's system more sensible than Google's. Google's can be misled by low-quality backlinks; Amazon's is rooted in real purchases and real customer satisfaction, which is much harder to fake consistently.

How to actually rank in 2026

The way you rank high on Amazon is still, fundamentally, by selling well to the people who see you. Keywords get you eligible to appear; conversion and satisfaction determine where. Practically:

• Do real keyword research and front-load your title with your most important, highest-intent terms. Target a focused set of primary keywords plus a layer of secondary terms rather than stuffing hundreds.
• Optimize for conversion: a clean main image, benefit-driven bullets, strong A+ Content, competitive price, and enough quality reviews to build trust.
• Use advertising and organic together. Strong ad performance on a keyword sends positive signals that can lift organic rank for that same term. Poorly structured campaigns that spend a lot and convert poorly can do the opposite.
• Keep inventory in stock. Going out of stock kills velocity and rank, and it's expensive to rebuild.

The new layer: Rufus, COSMO, and AI-driven discovery

Amazon has begun layering AI on top of search. Its shopping assistant, Rufus, answers shopper questions conversationally and surfaces products based on intent, and behind the scenes Amazon uses models (sometimes referred to as COSMO) to better understand what shoppers actually mean. The practical implication for sellers: write listings that genuinely answer real shopper questions and describe true use cases, not just keyword strings. A listing that clearly states what the product is, who it's for, and what problem it solves is increasingly what gets surfaced — both to humans and to the AI reading on their behalf.

Beyond the basics, don't try to hack the system with manipulative giveaways or fake reviews. Short-term blasts can lift rank briefly, but if the product doesn't sustain real sales and satisfaction it de-ranks fast — and review manipulation can get your listings or account suspended. You give yourself the best chance by selling the best product at the best price, with a listing that converts.