Guide · Amazon SEO

The Amazon A10 algorithm: how ranking actually works in 2026.

A9 rewarded whoever spent the most on Sponsored Products. A10 rewards whoever converts the best and drives the most qualified traffic from off Amazon. If your rankings feel harder to hold and PPC feels less efficient than it did two years ago, this is why, and here's the playbook to adapt.

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Playbook used by 8-figure brands ranking on A10 without brute-force ad spend

Client brand logo - High Voltage GP partnerClient brand logo - High Voltage GP partnerClient brand logo - High Voltage GP partnerClient brand logo - High Voltage GP partnerClient brand logo - High Voltage GP partnerAnnin FlagmakersFrame AmoCrailtapGibbon SlacklinesArtasteJeff Hamilton
The problem

A9 tactics don't rank listings anymore.

For years the ranking formula was simple: spend on Sponsored Products, drive units, watch organic position climb. A10 broke that loop. Amazon now filters aggressively for the source, quality, and stickiness of the traffic behind every sale, and the listings that hold page one are the ones with strong organic conversion, external demand, and clean seller performance data.

  • PPC-driven sales no longer carry the same ranking weight as organic conversions from search
  • Off-Amazon traffic from Google, TikTok, Meta, and email now materially influences position, especially with Attribution tags
  • Seller authority (account age, IPI, order defect rate, on-time shipping) is a ranking input, not just a compliance metric
  • CTR on the main image and title is a bigger factor than title keyword stuffing
  • Rufus, Amazon's AI shopping assistant, is starting to sit in front of the traditional SERP for informational and comparison queries
  • Review velocity, Q&A depth, and A+ module richness feed both traditional ranking and Rufus retrieval
Our approach

Convert better. Bring your own traffic. Feed the AI layer.

The brands winning under A10 stop trying to out-spend the algorithm and start optimizing the three inputs it actually rewards: on-listing conversion rate, external traffic quality, and structured content depth (for Rufus and for humans). Every tactic below ladders back to one of those three.

01

Lift organic conversion first

The single biggest A10 signal is the conversion rate of shoppers who arrive from Amazon's own organic search. Fix main image, title, A+ hero module, price positioning, and review social proof before spending another dollar on external traffic. A listing that converts at 15% will out-rank a listing that converts at 8% at the same spend, every time.

02

Drive external traffic with Attribution

Traffic from Google, Meta, TikTok, YouTube, and email now moves rankings, but only if Amazon can attribute it. Wrap every off-Amazon link with an Amazon Attribution tag so Amazon sees the source, the keyword intent, and the resulting conversion. Untagged traffic converts but doesn't tell Amazon's ranking system anything.

03

Optimize the listing for Rufus

Rufus answers shopper questions by reading structured attributes, backend keywords, A+ content, and reviews. Populate every backend field, write A+ modules that answer real buyer questions (use, fit, materials, warranty), and seed Q&A with the questions Rufus is most likely to be asked about your category.

What you get

The 6 A10 ranking signals worth optimizing.

  • Organic conversion rate on Amazon-sourced clicks, the highest-weight signal in A10
  • External traffic volume and quality, measured through Amazon Attribution
  • Seller authority: account age, IPI, order defect rate, late shipment rate, valid tracking rate
  • CTR on main image and title in the search results grid, tested against category benchmarks
  • Review velocity and rating distribution, plus response quality on negative reviews
  • A+ content and backend attribute depth, the raw material Rufus retrieves from
How we work

How to rank a listing under A10, step by step.

Step 1

Audit organic conversion rate

Pull Business Reports → Detail Page Sales and Traffic. Filter to organic sessions (approximate: total sessions minus Sponsored Products clicks). Anything below your category median is the first thing to fix.

  • Benchmark unit session % against your category median (Helium 10 / Jungle Scout have these)
  • Split-test main image variants using Manage Your Experiments if you have Brand Registry
  • Rewrite the title with the buyer's problem in the first 80 characters, not a keyword salad
  • Audit A+ hero module: is the value prop legible on mobile in 3 seconds?
  • Verify price is within 10% of the top 3 organic competitors for the head term
Step 2

Tag and route external traffic

Set up Amazon Attribution (free, inside Seller Central or Vendor Central) and wrap every off-Amazon link that points to your listing. Untagged external traffic still converts but doesn't feed the A10 ranking model.

  • Create one Attribution tag per source (Google Search, Google Shopping, Meta, TikTok, email, influencer)
  • Route paid Google Shopping and branded search to the Amazon listing via Attribution, not to your DTC site, for SKUs where Amazon is the primary channel
  • Include the tagged link in every organic Meta/TikTok post that features the product
  • Bake the Attribution link into your Klaviyo post-purchase and browse-abandon flows
Step 3

Clean up seller authority

A10 weights account-level performance more than A9 did. A single leaking metric (late shipment rate, order defect rate, low IPI) drags every SKU on the account.

  • Get IPI above 500, then above 550 for storage-limit headroom
  • Order defect rate under 1%, late shipment rate under 4%, valid tracking rate above 95%
  • Enroll every eligible ASIN in Brand Registry, Vine, and Transparency
  • Resolve every open policy warning in Account Health before running new launches
Step 4

Rebuild the listing for Rufus

Rufus reads structured data first, prose second. Every backend field is a chance to be cited in an AI answer that sits above the traditional SERP.

  • Populate every applicable backend attribute (material, size, use, occasion, care instructions)
  • Fill Search Terms with unique long-tail phrases, no duplicates from the title or bullets
  • Write A+ modules as question-answers (use, fit, care, comparison to alternatives), not marketing copy
  • Seed Q&A with the top 10 questions from category reviews, competitor listings, and Reddit threads
  • Respond to negative reviews with factual, on-brand replies, Rufus reads these too
Ongoing

Measure ranking movement weekly

A10 ranking changes are slower and more durable than A9 changes. Track rank on a weekly cadence, not daily, and correlate movements to the specific input you changed.

  • Track top 10 head-term keyword positions weekly (Helium 10 Keyword Tracker or equivalent)
  • Log every listing change in a changelog with date and the ranking-input hypothesis it targets
  • Review Attribution dashboard weekly: which external source drives the highest new-to-brand rate
  • Quarterly: re-audit organic conversion rate against category median and rebuild the weakest 20% of listings
FAQ

Questions buyers actually ask.

What is the Amazon A10 algorithm?+

A10 is the informal name given by the seller community to Amazon's current organic search ranking system, the successor behavior to A9. It weights signals like organic conversion rate, external traffic, seller authority, and CTR far more heavily than A9 did, and de-emphasizes brute-force PPC-driven ranking.

How is A10 different from A9?+

A9 rewarded sales velocity from any source, which meant ad spend and giveaways could push a listing to page one. A10 filters those sources and gives more credit to organic conversions, off-Amazon traffic sources (Google, TikTok, email, influencers), and long-term seller performance (IPI, account health, on-time shipping).

Does external traffic really move Amazon rankings?+

Yes, and it's one of the biggest levers under A10. Traffic that lands on your Amazon listing from Google, Meta, TikTok, or an email flow and converts at a normal rate signals Amazon that the listing is worth surfacing to more shoppers, especially for keyword-attributed clicks via Attribution tags.

How does Rufus, Amazon's AI shopping assistant, affect ranking?+

Rufus reads structured product data, A+ modules, review content, and Q&A to answer shopper questions in natural language. Listings with clear attributes, populated backend keywords, and comprehensive A+ content are more likely to be cited by Rufus, which increasingly shapes what shoppers see before the traditional SERP.

What's the fastest way to improve my A10 ranking?+

Fix the conversion rate on your existing traffic first: title, main image, A+ content, price, review count. Then drive external traffic from a channel you already run (Meta, Google, email) with Amazon Attribution tags. Ad spend inside Amazon still matters, but it's a multiplier on a listing that already converts, not a shortcut past one.

Does PPC still matter under A10?+

Yes, but the role has shifted. PPC is now for keyword discovery, defense of branded search, and pushing new SKUs past cold-start, not for buying your way to page one on head terms. Sustainable ranking under A10 comes from organic conversion + external traffic, with PPC filling the gaps.

Want an A10 audit of your top-selling ASINs?

Send us your top 5 ASINs. We'll come back with a line-item breakdown of your organic conversion rate against category median, the A10 ranking signals you're leaking, and the specific external-traffic and Rufus-optimization moves that would move rank the fastest. No retainer, no commitment.

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