"This new capability will help you generate the most profit for every ad that appears on your site, whether the ads come from AdWords advertisers or Google-certified ad networks," Google wrote.
All reporting and payments will still be conducted via AdSense; available ad formats will remain those offered for AdWords ads, to maintain a sense of uniformity.
Ad networks will be certified for the program based on their adherence to Google's user privacy guidelines, as well as ad quality and speed. Publishers will be able to control which networks can serve ads on their pages.
Below, a demo video to explain in more detail the changes to the program:
Ads from certified networks will begin appearing on AdSense pages over the coming months; naturally, publishers will have the option to continue permitting only AdWords to serve ads on their pages. At first, the feature will only appear in North American and Europe; it will roll out elsewhere if the program shows promise.