Protected Auction Services documentation

January 14, 2026 ยท View on GitHub

Technologies referred to in this README are scheduled for deprecation.

This repository will be archived and will no longer be updated.

See our Update on Plans for Privacy Sandbox Technologies.

Privacy Sandbox feature status provides more information about the status of individual APIs and platform features.


Protected Auction Services documentation

This GitHub repository contains proposals for the Privacy Sandbox's Protected Auction server-side infrastructure that supports the Privacy Sandbox's client-side APIs.

Protected Auction includes Protected Audience and Protected App Signals ad targeting products.

Important

This repository is for documentation only. For discussions, visit the WICG/protected-auction-services-discussion repository.

Protected Auction services trust model

Protected Audience auctions mixed mode

Bidding and Auction services (B&A)

Key/Value service

Ad Retrieval service

B&A and TEE KV / Retrieval version compatibility

User Defined Function Execution

Inference

Server productionization

Server cost

Protected Auction services launch phases

Client and server integration

Protected Audience

Protected App Signals

Additional explainers for Protected Audience API.