Google has published a new article on asset experiments within Performance Max campaigns. Advertisers can now test the impact of new creative assets, measure performance with two success metrics, and access an integrated Experiments page for streamlined testing.
Among the key features are the ability to test different sets of assets, add seasonal elements, and compare performance metrics. This functionality will soon be enhanced with expanded support for the Google Ads API and manager accounts.
Find the official announcement here: Scale Results with New Asset Experiments in Performance Max.