Hi John,
Could you comment on any additional progress made in the 5 required
areas for OT extensions (see
https://www.chromium.org/blink/launching-features/#origin-trials)?
thanks,
Mike
On 4/12/23 5:44 PM, John Delaney wrote:
Greetings,
We would like to extend the origin trial for all of the Privacy
Sandbox Ads APIs including: Topics, FLEDGE, Private Aggregation,
Fenced Frames, Attribution Reporting, and Shared Storage.
We are sending a single intent for the extension because the rationale
is shared among the APIs.
*Contact emails*
johni...@chromium.org, jkar...@chromium.org, pauljen...@chromium.org,
*Explainer*
Attribution Reporting:
https://github.com/WICG/attribution-reporting-api/blob/main/EVENT.md
and
https://github.com/WICG/attribution-reporting-api/blob/main/AGGREGATE.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 113 continuing through Chrome 115. The
experiment is therefore running from Chrome 101 through 115. We
previously requested an extension from Chrome 110 - 113 here
<https://groups.google.com/a/chromium.org/g/blink-dev/c/gpmaOi3of_w/m/SyMclFhMAAAJ>.
*Any risks when the experiment finishes?*
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. The extension will allow the ecosystem
more time in stable channels to continue their experiments. We
additionally added individual isolated experiments for each of the
Privacy Sandbox APIs, an extension will allow us to understand
individual metrics outside of our existing unified experiment
These improvements include, but are not limited, to the following:
Attribution Reporting
* Various bug fixes & utility improvements
* Test cross app and web measurement
* Additional debugging capabilities including source success debug
reports
<https://github.com/WICG/attribution-reporting-api/blob/main/verbose_debugging_reports.md#source-success>
Fenced Frames
* Limited feedback so far
* FencedFrameConfig
<https://github.com/WICG/fenced-frame/blob/master/explainer/fenced_frame_config.md>
API surface and supporting size for FLEDGE
<https://github.com/WICG/turtledove/pull/417>
* reportEvent dev tools support, support for ARA
<https://github.com/WICG/turtledove/blob/main/Fenced_Frames_Ads_Reporting.md#support-for-attribution-reporting>
and for component ads
<https://github.com/WICG/turtledove/issues/332#issuecomment-1416224808>
FLEDGE
* Improve latency (e.g. parallelization of FLEDGE auction support,
more timeout support, more latency reporting)
* Origin Trial Support (e.g. better integration with Private
Aggregation API, k-anonymity testing, misc features)
Private Aggregation (OT started in M107)
* Adding support for a “context ID” to support report verification
within Shared Storage worklets
Shared Storage SelectURL
* Replaced k-anon requirement with lower entropy limits during
initial phase
* Would like to have feedback from additional testers.
Topics
* General utility improvements (filtering is less restrictive
without loss of privacy)
* Performance optimizations (topics can be sent via headers in fetch
and subframe navigation requests rather than creating an iframe
and calling javascript)
Feedback from the ecosystem will continue to influence the evolution
of the APIs.
*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/feature/5743412790689792
Shared Storage: https://chromestatus.com/feature/6256348582903808
Topics: https://chromestatus.com/feature/5680923054964736
Unified Feature Dashboard:
https://chromestatus.com/feature/5100526168440832
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