WTF is the Attribution Reporting API in Google’s Privacy Sandbox?
![](https://digiday.com/wp-content/uploads/sites/3/2022/10/cookie_banner_1440x600-1.webp?w=1030&h=579&crop=1)
This article is part of a special Digiday editorial series to catch you up on the basics of Google’s phaseout of third-party cookies. More from the series →
The third-party cookie going away won’t only affect advertisers’ abilities to target ads but also their means of knowing which of those ads led to product sales or conversion events.
To help fill that cookie-sized hole in the digital ad industry’s measurement system, Google has developed the Attribution Reporting API as part of its Privacy Sandbox set of proposed third-party cookie replacements.
The Attribution Reporting API effectively has the browser play the part of the third-party cookie. But in order to protect people’s privacy, it restricts advertisers’ and publishers’ abilities to connect ad exposure and conversion data while introducing noise and delays.
“There’s some pluses with that. But there’s also some minuses that come with the Attribution Reporting API,” said Joe Doran, chief product officer at Epsilon.
Digiday spoke with Doran as well as Quantcast’s Durban Frazer and Sharethrough’s Curt Larson to break down the pluses, minuses and mechanics of the Attribution Reporting API in this explainer video.
More in Marketing
![](https://digiday.com/wp-content/uploads/sites/3/2025/01/search-frag-digiday.jpg?w=439&h=277&crop=1)
Snapchat, Pinterest and Reddit turn to AI in laying the groundwork to capture SMB ad dollars
The latest platforms earnings window confirmed they’re finally in a position to make a bigger play for this advertiser category.
![](https://digiday.com/wp-content/uploads/sites/3/2023/11/pixelated-football-digiday.gif?w=439&h=277&crop=1)
Tubi’s Super Bowl viewership highlights brands’ embrace of FAST channels
The Big Game was a milestone for the Fox-owned streamer, and for advertisers searching for sports audiences.
![](https://digiday.com/wp-content/uploads/sites/3/2024/03/tiktok-chop-digiday.gif?w=439&h=277&crop=1)
Why TikTok’s loss might be Instagram’s gain as Reels grows in content and audience
Instagram Reels may be the closest experience to TikTok currently, but can it seize this opportunity to overtake its rival?