Kacper Polewiak

• Contextual SDA passed both quality tests we performed and described in this article
• The mechanisms we used to assess the contextual SDA signals’ quality were: SSPs’ audiences sent via Deal IDs and RTB House’s proprietary ContextAI engine

Have you heard of Seller-Defined Audiences (SDA) yet? SDA was released at the beginning of 2022 by Project Rearc – an initiative that came to life as the IAB Tech Lab’s answer to the impending demise of 3rd-party cookies. Although a year hasn’t passed since its release, SDA has received significant attention in the press and industry conferences and is considered one of the go-to solutions for targeting when the 3rd-party cookie pond dries up.

In this edition of the Cookieless Newsroom, we highlight Microsoft’s deployment of the Ad Selection API in its Edge browser, a tool similar to Privacy Sandbox's Protected Audience API. We also cover a recent academic study demonstrating the suitability of the Protected Audience API for retargeting. Additionally, we report on a landmark European regulatory fine imposed on Google’s MarTech division.

In this Media Review, you can read about how Privacy Sandbox evolved and determine how close we are to third-party cookies deprecation, find out about key learnings from the recently released SDA Implementation Guide, and see how Meta’s Interoperable Private Attribution tests went.