Intent to Extend Experiment: Privacy Sandbox Ads APIs through M113
John Delaney
Greetings,
We would like to extend the Privacy Sandbox Ads APIs experiment for all APIs contained in the unified origin trial including: Topics, FLEDGE, Fenced Frames, Attribution Reporting, Shared Storage, and Private Aggregation.
We are sending a single intent for the extension because the rationale is shared among each of the APIs.
Contact emails
john...@chromium.org, jka...@chromium.org, paulj...@chromium.org
Explainer
Attribution Reporting: https://github.com/WICG/attribution-reporting-api/blob/main/EVENT.md
Fenced Frames: https://github.com/WICG/fenced-frame/tree/master/explainer
FLEDGE: https://github.com/WICG/turtledove/blob/master/FLEDGE.md
Shared Storage: https://github.com/WICG/shared-storage
Private Aggregation: https://github.com/patcg-individual-drafts/private-aggregation-api
Topics API: https://github.com/patcg-individual-drafts/topics/blob/main/README.md
Summary
A collection of APIs to facilitate advertising: Attribution Reporting, Fenced Frames, FLEDGE, Private Aggregation, Shared Storage and Topics.
Link to “Intent to Experiment” blink-dev discussion
Attribution Reporting: https://groups.google.com/a/chromium.org/g/blink-dev/c/jEnNpideO1Y/m/nlEDdjmnCgAJ
Fenced Frames: https://groups.google.com/a/chromium.org/g/blink-dev/c/y6G3cvKXjlg/m/DSNrBtxyAgAJ
FLEDGE: https://groups.google.com/a/chromium.org/g/blink-dev/c/0VmMSsDWsFg/m/_0T5qleqCgAJ
Private Aggregation: https://groups.google.com/a/chromium.org/g/blink-dev/c/576sXtXNeCA
Shared Storage: https://groups.google.com/a/chromium.org/g/blink-dev/c/jDx8z5a6ovk/m/H6w1UO-uBAAJ
Topics API: https://groups.google.com/a/chromium.org/g/blink-dev/c/oTwd6VwCwqs/m/jPkW3T-mCgAJ
Unified OT Thread: https://groups.google.com/a/chromium.org/g/blink-dev/c/Vi-Rj37aZLs/m/wzeBWfxxEgAJ
Goals for experimentation
Unchanged.
Experimental timeline
We'd like to extend the origin trial for 3 additional milestones, with the extension starting in 111 and continuing through Chrome 113. The initial experiment is running from Chrome 101 through 110. We previously requested an extension from Chrome 108 - 110 here.
Any risks when the experiment finishes?
None. The unified origin trial is only available for a subset of Chrome users, and requires developers to perform feature detection to use the APIs.
Reason this experiment is being extended
We received feedback from developers resulting in the need for continued testing and addressing several points of feedback that required changes to the APIs, in the next several milestones. This will allow the ecosystem more time in stable channels to continue their experiments.
These improvements include, but are not limited, to the following:
Attribution Reporting
Various bug fixes
Support for more debug reports
Support for cross app and web measurement
Fenced Frames
Backward compatible API surface change to take a WebIDL object “config” instead of an urn:uuid as a src.
Enhancement of permissions delegation framework to be more compatible with the allow attribute.
Refactoring of reportEvent implementation to be more secure.
FLEDGE
Large scale latency optimizations
Private Aggregation (OT started in M107)
Limited feedback so far, partners are still ramping up their testing
Shared Storage
Limited feedback so far, partners are still ramping up their testing
Topics
General utility improvements
Address potential abuse vectors
Performance optimizations
Feedback from the ecosystem, especially testing results from our Origin Trials, will continue to influence the evolution of the API.
Ongoing technical constraints
Please see each API's initial Intent to Experiment.
Will this feature be supported on all five Blink platforms supported by Origin Trials (Windows, Mac, Linux, Chrome OS, and Android)?
Please see each API's initial Intent to Experiment.
Link to entry on the feature dashboard
Attribution Reporting: https://chromestatus.com/feature/6412002824028160
Fenced Frames: https://chromestatus.com/feature/5699388062040064
FLEDGE: https://chromestatus.com/feature/5733583115255808
Private Aggregation: https://chromestatus.com/guide/edit/5743412790689792
Shared Storage: https://chromestatus.com/feature/6256348582903808
Topics: https://chromestatus.com/feature/5680923054964736
Unified Feature Dashboard: https://chromestatus.com/feature/5100526168440832
Rick Byers
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