Q. What is the biggest difference between A9 and A10?

A. A10 gives significantly more weight to external traffic sources and organic sales, while A9 was more heavily influenced by PPC-driven sales velocity.

External Traffic SEO and A10 Algorithm: Authority Building and Sales Maximization Strategy for Amazon

Now that Amazon's search algorithm has evolved from "A9" to "A10," the biggest turning point sellers face is the fact that internal optimization alone has its limits. In the latest A10 algorithm, the impact of traffic inflow from external sites on search rankings (SERPs) has been significantly strengthened. In this article, we provide a detailed explanation of the strategic scheme of how building "Authority" originating from SNS and external advertising — going beyond Amazon's internal logic — directly leads to sales maximization.

Table of Contents (Click to Expand)

1. A10 Algorithm: Key Differences from A9

A10 weighs external traffic sources, seller authority metrics, and organic sales more heavily. Unlike A9, which prioritized PPC-driven sales, A10 rewards genuine demand signals.

Q. Can increasing external traffic hurt CVR?

A. Potentially, if traffic is untargeted. Focus on high-intent audiences through targeted campaigns and use Amazon Attribution to track which sources convert best.