____ is a clean room solution, used to help measure retail performance in which advertisers can easily perform analytics across pseudonymized signals, including Amazon Ads signals as well as their own inputs.

1. Brand Metrics
2. Amazon Brand Analytics
3. Amazon Marketing Cloud

The correct answer is Amazon Brand Analytics.

Amazon Brand Analytics is a clean room solution that allows advertisers to easily perform analytics across pseudonymized signals, including Amazon Ads signals as well as their own inputs. This data can be used to measure retail performance, identify trends, and make informed decisions about marketing campaigns.

Brand Metrics and Amazon Marketing Cloud are also clean room solutions, but they do not offer the same level of integration with Amazon Ads as Amazon Brand Analytics. This makes Amazon Brand Analytics the best choice for advertisers who want to measure the performance of their Amazon Ads campaigns.

Here are some of the benefits of using Amazon Brand Analytics:

• Easy to use: Amazon Brand Analytics is a user-friendly platform that can be used by advertisers of all levels of experience.
• Accurate data: Amazon Brand Analytics uses pseudonymized signals to ensure that the data is accurate and confidential.
• Integration with Amazon Ads: Amazon Brand Analytics is tightly integrated with Amazon Ads, making it easy to measure the performance of your campaigns.
• Wide range of metrics: Amazon Brand Analytics offers a wide range of metrics that can be used to measure retail performance.
• Reporting capabilities: Amazon Brand Analytics offers a variety of reporting capabilities that can be used to share your findings with stakeholders.

If you are looking for a clean room solution that can help you measure the performance of your Amazon Ads campaigns, Amazon Brand Analytics is the best choice.