Amazon’s search algorithm (people often call it A9 or A10) is basically the behind-the-scenes system that decides which products show up first when someone searches. It’s not judging who has the prettiest listing—it’s trying to predict what will sell and keep customers happy.
So it watches signals like keyword relevance, click-through rate, conversion rate, price competitiveness, availability, shipping speed, reviews, and even how shoppers behave after landing on your page. That’s why two sellers can use similar keywords, but the one with better conversion and fewer headaches tends to climb.
The “A9 vs. A10” talk is mostly shorthand; the real point is this: Amazon rewards listings that make shoppers buy confidently and get what they expect.
- Higher conversion usually beats “more keywords.”
- Stockouts can hurt momentum more than you’d think.
- Strong fulfillment (Prime/Fast shipping) often helps visibility.
- PPC can spark data that feeds longer-term performance.
