TL;DR Summary:
New Ad Partners Coming April 20: Google AdSense will experiment with updated ad technology partners starting April 20, 2026, affecting publishers in Europe, UK, and Switzerland with potential changes to ad fill rates and revenue.Two-Phase Rollout Plan: The experiment runs for approximately six weeks, with full implementation expected by June 5, 2026, if results prove beneficial for publishers.Publisher Control Available: You can view current and experimental partners in your AdSense account under Privacy & messaging settings, and opt out by selecting "Do not automatically include commonly used ad partners" to maintain a custom list.What happens when Google AdSense changes its ad technology partners in 2026?
Google AdSense will experiment with a new list of ad technology partners starting April 20, 2026. The company announced this change affects publishers who rely on automated ad partner selections for their revenue.
Google AdSense Ad Technology Partners Experiment Timeline
Google set up a two-phase rollout for these changes. The experiment begins on or after April 20, 2026. If Google finds the results beneficial for publishers, the company will implement the full update on or after June 5, 2026.
This experiment targets publishers in the European Economic Area, UK, and Switzerland. The changes will affect automatic consent signals for vendors and potentially alter ad fill rates and GDPR compliance requirements.
How Google Selected New Ad Technology Partners
Google chose these partners based on data from all programmatic demand sources. The company focused on partners that work most closely with publishers globally. All selected partners must meet Google’s privacy standards.
Google stated the update “will reflect the partners that work most closely with publishers globally, determined by data collected from all programmatic demand sources, as well as meeting our privacy standards.”
Where Publishers Can View Current Google AdSense Ad Technology Partners
Publishers can check their current ad technology partner list in their AdSense account. Navigate to Privacy & messaging, then European regulations settings, then the “Your ad partners” menu.
Once the experiment starts, you’ll see both your current partners and the experimental partners in this same location. Google will also publish an updated list at their Manage your ad technology partners page.
How to Opt Out of Google’s Ad Partner Experiment
Publishers who want control over their ad partners have options. You can prevent automatic updates by selecting “Do not automatically include commonly used ad partners” in your AdSense settings.
This creates a custom list pre-filled with your current selections. You can then modify this list as needed. Publishers using third-party Consent Management Platform providers to collect GDPR consent will manage their ad tech partner lists through their CMP provider instead.
What This Means for Publisher Revenue During the Transition
The experiment period creates uncertainty for publishers who depend on consistent ad revenue. Changes to Google AdSense ad technology partners affect which ads display on your site and how much revenue those ads generate.
Publishers need ways to monitor performance during this transition period. The experiment runs for approximately six weeks, giving you time to evaluate whether the changes help or hurt your revenue.
Preparing Your Site for Ad Technology Partner Changes
Smart publishers prepare for these types of industry changes by maintaining control over their ad management. While Google experiments with automatic partner selections, you need tools that let you test and optimize your ad placements independently.
Ad Commander gives publishers granular control over which ads display and when they rotate during periods of uncertainty like Google’s upcoming experiment. Ad Commander helps you A/B test different ad configurations and track performance data to make informed decisions about your monetization strategy. If you want to maintain revenue stability while Google tests new ad technology partners, Ad Commander provides the control and testing capabilities you need.
