Web

On the web, the Protected Audience API enables on-device ad auctions. This means that the process of selecting which ad to show happens directly on the user's device (like their phone or computer), rather than relying on data being shared across different websites. This helps to protect user privacy by keeping information localized and minimizing the sharing of personal data.

Additionally, the web also supports Bidding and Auction (B&A) services, which allow parts of the auction to be conducted on cloud servers within a Trusted Execution Environment (TEE), optimizing performance and enabling unified contextual and re-marketing ad demand consideration.