# Amazon — How Yahoo enhances search retargeting using Amazon Bedrock

- Company: Amazon (amazon.com)
- Announced: 2026-07-30T16:40:36+00:00
- Category: capability-change
- Subject: Bedrock / Nova
- Models affected: Amazon Nova, Meta Llama, Anthropic's Claude, Claude 3.5 Sonnet v2, Amazon Titan
- Source: https://aws.amazon.com/blogs/machine-learning/how-yahoo-enhances-search-retargeting-using-amazon-bedrock/
- Record: https://forck.live/items/2430-how-yahoo-enhances-search-retargeting-using-amazon-bedrock

Yahoo enhanced its Search Retargeting (SRT) keyword expansion using Amazon Bedrock and generative AI, selecting Anthropic's Claude 3.5 Sonnet v2 as the most effective model, resulting in improved expansion ratios.

## Evidence

Verbatim from https://aws.amazon.com/blogs/machine-learning/how-yahoo-enhances-search-retargeting-using-amazon-bedrock/:

> Ultimately, Anthropic’s Claude 3.5 Sonnet v2 was selected as the most effective model for search keyword expansion, balancing both expansion ratio and semantic similarity.

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