Amazon A9

Core technology provider for Amazon's e-commerce search and advertising platform

Amazon A9 is a subsidiary of Amazon that develops and operates the search and advertising technology powering Amazon's e-commerce platform. Founded in Palo Alto, California, A9 is responsible for the product search algorithms that help millions of customers find products on Amazon.com, as well as the underlying technology that drives Amazon's advertising business. The company combines machine learning, natural language processing, and information retrieval to optimize product discovery and ad relevance. A9's technology is integral to Amazon's advertising ecosystem, which has grown into one of the largest digital advertising platforms globally. The search and ranking algorithms developed by A9 directly impact product visibility, making it a critical component for sellers and advertisers on the Amazon marketplace. Beyond product search, A9's innovations extend to visual search, personalization, and recommendation systems that enhance the shopping experience. As a wholly-owned Amazon subsidiary, A9 operates as the research and development arm for Amazon's search and advertising capabilities. While it maintains its own brand identity and engineering culture, A9's work is deeply integrated into Amazon's core commerce and advertising products, including Sponsored Products, Sponsored Brands, and Amazon DSP (Demand-Side Platform).