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Understanding the Amazon A9 Algorithm

  • Amazon
Understanding the Amazon A9 Algorithm
August 29, 2025

On Amazon, customer reviews are the currency of trust. Managing reviews and ratings at scale can make the difference between a product ranking highly and one that is buried for high-volume sellers. Whether you're preserving your ASINs or improving your seller profile, it's critical to know how to handle Amazon reviews wisely. To learn why Amazon seller feedback is so important to high-volume merchants, keep reading the blog.

Why Amazon Feedback Matters More Than Ever

One of the first things customers come across when researching products on Amazon is customer reviews. Poor customer reviews can negatively impact conversions and perceived trust, while Buy Box eligibility is determined by performance metrics like fulfillment method, shipping speed, and pricing. The importance of proactive Amazon feedback management has grown due to the greater scrutiny of buyers and the algorithmic weight given to reviews.

Customer feedback plays multiple roles:

  • Influences buying decisions

  • Affects organic ranking

  • Impacts seller account health

  • Drives credibility and trust

The Difference Between Amazon Feedback and Reviews

While often used interchangeably, there's a difference between Amazon reviews and feedback:

  • Seller Feedback: Reflects the buyer's experience with the seller (shipping, packaging, communication).

  • Product Reviews: Reflect the buyer's satisfaction with the product itself (quality, functionality, etc.).

Both of them impact your Amazon presence. While seller feedback contributes to account reputation, eligibility for programs like Seller Fulfilled Prime depends more heavily on performance metrics such as delivery and cancellation rates. Whereas, product reviews are more visible to customers and directly impact customers decisions.

Common Feedback Challenges for High-Volume Sellers

  1. Volume Overload: When thousands of orders are placed each month, avoiding negative reviews is highly impossible.

  2. Inconsistent Buyer Expectations: If you use FBA, shipping is out of your control. This increases the chances of negative reviews concerning the delayed shipping, causing low rating.

  3. Manual Procedures Don't Scale: Manually managing reviews slows down response times.

  4. Misuse of Feedback Channels: Customers frequently mistake seller feedback for product reviews, and vice versa.

How to Manage Customer Feedback on Amazon Effectively

1. Use the Amazon Feedback Manager

The Amazon Feedback Manager is your command center for managing seller feedback. It provides a dashboard to view, sort, and respond to feedback.

Steps to use effectively:

  • Check daily for new feedback.

  • For seller feedback, respond promptly within 24 hours, especially for 1- or 2-star ratings. For product reviews, enrolled brand owners can respond using the Brand Dashboard’s Customer Reviews feature.

  • Politely acknowledge the customer’s concern and offer a resolution (if eligible).

  • Request the removal of feedback that violates Amazon policies.

2. Automate Feedback Collection at Scale

Amazon prohibits incentivized reviews, but you can still ethically request reviews using Amazon’s built-in review request tool. The tool is located inside each order in Seller Central. This sends a standardized message to the buyer asking for both a product review and seller feedback. Moreover, it can be triggered manually or via othe tools using Amazon’s API.

3. Optimize Post-Purchase Communication

Use the Buyer-Seller Messaging system only for permitted follow-up. Avoid explicitly asking for both a review and feedback in a single message. Comply with Amazon’s Communication Guidelines to avoid violations. You can still thank the customer for their purchase, provide helpful tips or product setup instructions, and politely ask for feedback or a review without incentivizing. Ensure your messages are clear, respectful, and non-promotional. Promotional messages violate Amazon's guidelines.

4. Analyze Trends in Negative Feedback

High-volume sellers often overlook the insight hidden in negative feedback. Segment negative feedback into categories:

  • Product issues

  • Fulfillment/shipping complaints

  • Communication gaps

Conduct monthly reviews of negative comments to identify trends and apply fixes:

  • Improve packaging if damage is common.

  • Switch carriers if delayed delivery is a pattern.

  • Adjust your product listing if expectations aren’t aligning with what’s delivered.

5. Flag and Remove Ineligible Feedback

Amazon removes seller feedback (not product reviews) only if it meets specific criteria—for example, if it’s a product review miscategorized as seller feedback, uses offensive language, or contains personally identifiable info. Amazon will not remove feedback simply because it is negative or because a resolution was provided.

To request removal:

  • Go to Feedback Manager

  • Locate the feedback

  • Click "Request removal"

Amazon typically reviews within 48 hours. While success isn’t guaranteed, it’s worth attempting for clearly ineligible entries.

Tools and Systems to Scale Feedback Management

Managing hundreds of orders every day makes manual monitoring unscalable. Create a simple internal feedback system or look at services that:

  • Start the automation of review requests following Amazon's guidelines.

  • Real-time monitoring and alerting for reviews with fewer than five stars.

  • Combine reviews from Amazon customers in several marketplaces.

  • To identify early warning indicators, create sentiment analysis reports.

How Amazon Seller Feedback Influences Rankings Under A10

While Amazon does not confirm specific naming for its ranking algorithm, recent changes suggest a stronger emphasis on customer satisfaction signals such as seller performance, feedback quality, and verified purchase reviews.

Here's how Amazon seller feedback impacts rankings:

  • Organic Ranking Boost: A10 rewards sellers with consistent positive feedback through improved organic visibility.

  • Buy Box Eligibility: Sellers with at least 95% positive feedback have significantly better Buy Box chances.

  • Verified Purchase Reviews: Reviews from verified purchases carry more algorithmic weight.

  • Seller Performance Metrics: The A10 algorithm considers overall seller health, including feedback scores, in ranking decisions.

  • Customer Trust Signals: Higher review quantity and quality signal reliability to both the A10 algorithm and shoppers.

Best Practices for Increasing Positive Feedback

  1. Deliver Consistently: Nothing beats meeting and exceeding buyer expectations.

  2. Ensure Listing Accuracy: Avoid negative reviews due to mismatched expectations.

  3. Follow Up After Delivery: Use the Amazon review request tool within 3-5 days after product delivery.

  4. Proactively Solve Issues: Reach out to dissatisfied customers and offer a resolution or replacement.

  5. Include Inserts: Ensure the message is neutral, does not ask only for positive reviews, and avoids any language that discourages negative feedback or asks for editing a review in exchange for benefits.

  6. Monitor Negative Feedback Patterns: Weekly reviews help detect trends and take action before they spiral.

Things to Strictly Avoid

  • Never offer incentives for reviews, as it violates Amazon’s strict policies and can lead to suspension.

  • Avoid third-party review generation services which are not explicitly authorized.

  • Don’t ignore poor reviews, even one unresolved 1-star review can cost dozens of conversions.

  • Don't spam. Too many messages can annoy customers and get your messaging privileges revoked.

Wrapping Up

For large-volume Amazon merchants, handling consumer feedback at scale is a must, not a luxury. Feedback affects every aspect of your business, from raising organic search results to enhancing seller ratings. By utilizing Amazon's integrated tools, improving your communication, and implementing scalable methods, you can turn feedback from a hassle into a potent tool for growth.

Recall that having no bad reviews isn't the only need for success on Amazon. It all comes down to reacting effectively, repairing issues, and continuously providing value. Create your Amazon feedback playbook now, and use each review as motivation.


About the Author

Meher Patel is the Founder & CEO of Hector Ai. He specializes in Amazon Ads, Amazon DSP, Amazon Marketing Cloud (AMC), retail media, and agentic AI.

Under his leadership, Hector is ranked among the Top 20 Amazon Ads partners globally, and has won the Amazon Ads Partner Award for Seasonal Sales Strategy (2025) and the Amazon Ads Innovation Award (2025). Today, Hector manages over $350 million in annual ad spend across 500+ brands and agencies worldwide.

Meher Patel, Founder & CEO of Hector Ai

Meher Patel

Founder & CEO, Hector Ai

Hector Ai
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On this page

  • 1.Why Amazon Feedback Matters More Than Ever
  • 2.The Difference Between Amazon Feedback and Reviews
  • 3.Common Feedback Challenges for High-Volume Sellers
  • 4.How to Manage Customer Feedback on Amazon Effectively
  • ➤1. Use the Amazon Feedback Manager
  • ➤2. Automate Feedback Collection at Scale
  • ➤3. Optimize Post-Purchase Communication
  • ➤4. Analyze Trends in Negative Feedback
  • ➤5. Flag and Remove Ineligible Feedback
  • 5.Tools and Systems to Scale Feedback Management
  • 6.How Amazon Seller Feedback Influences Rankings Under A10
  • 7.Best Practices for Increasing Positive Feedback
  • 8.Things to Strictly Avoid
  • 9.Wrapping Up
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