This API measures ad conversions (e.g. purchases) and attributes them to clicked ads without using cross-site persistent identifiers like third-party cookies. Note that this is a very early stage design, and we’re explicitly not asking for permission to ship yet. We would like to get initial feedback on the idea and start prototyping.
Currently, the web ad industry measures conversions via identifiers they can associate across sites. These identifiers tie information about which ads were clicked to information about activity on the advertiser's site (the conversion). This allows advertisers to measure ROI, and for the entire ads ecosystem to understand how well ads perform. Since the ads industry today uses common identifiers across advertiser and publisher sites to track conversions, these common identifiers can be used to enable other forms of cross-site tracking. This doesn’t have to be the case, though, especially in cases where identifiers like third party cookies are either unavailable or undesirable. A new API surface can be added to the web platform to satisfy this use-case without them, in a way that provides better privacy to users.
Status in Chromium
Origin trial (tracking bug)
Consensus & Standardization
- No signal
- No signal
Intent to Prototype urlIntent to Prototype thread
Last updated on 2021-07-16