Privacy Sandbox Developer Preview 9: Custom Audience Delegation

Posted by Jon Markoff, Privacy Sandbox Developer Relations

Earlier this year we released the first Privacy Sandbox Beta on Android, with the goal of bringing real-world testing of our private advertising solutions to users' devices.

Since then, we’ve launched several additional Privacy Sandbox releases, each with new features and improvements, in Developer Preview and Beta. This is part of our ongoing commitment to helping developers create privacy-focused apps and tools that keep content open and accessible to everyone. Your feedback has helped us refine and improve these releases and new design proposals, and is greatly appreciated.

Today, we’re announcing Developer Preview 9 for the Privacy Sandbox on Android, including:

• Protected Audience API: The first release of Custom Audience Delegation, which supports the creation of custom audiences for buyers that do not have an on-device SDK presence. Bidding and Auction services integrations are available to support more complex ad auctions.
• Attribution Reporting API: Enrollment is no longer required for development and testing purposes. Improvements to debug reporting include supporting additional verbose debug report and app-to-web debug reports.
• SDK Runtime: With some limitations, SDK Runtime can now launch intents to other apps, and can bind to an allowlist of services.
• For the full list of released features, see the release notes.

Alongside Developer Preview 9, we’re also announcing Project Flight: a collection of sample apps that demonstrate how the Privacy Sandbox APIs can be used together in end-to-end user journeys. Project Flight includes the following:

• Advertiser app, to demonstrate a conversion by booking a travel experience
• Publisher app, to show a relevant ad and register an event
• SSP library, to demonstrate running ad selection and registering a source
• MMP library, to demonstrate joining a custom audience and registering a trigger
• A mock server backend as a companion to the Protected Audience and Attribution Reporting APIs using Firebase

As with all of our releases, we highly encourage developers to share feedback as they continue their journey into the Privacy Sandbox on Android. To get started, read the instructions to set up the SDK and system images on an emulator or supported Pixel device.

For more information on the Privacy Sandbox on Android, visit the developer site, and sign up for our newsletter to receive regular updates.