Responsive display ads are dynamic ad formats that automatically adjust to the size and appearance of the website or app where they’re displayed. They can be created in Google Ads and automatically optimized to display the best possible ad for each user and each display environment, improving their overall performance.
The system uses machine learning algorithms to determine which combination of images, headlines, logos, and other creative elements will perform best in each unique display environment, delivering a more visually appealing, engaging, and effective ad experience. Responsive display ads can appear on the Google Display Network, YouTube, and millions of other websites and apps.
Also, See: PPC A/B Testing