What are Responsive Display Ads? #
Responsive ads automatically adjust their size, appearance, and format to fit available ad spaces. So a single responsive ad may appear as a small text ad in one place and a large image ad in another. Once the assets needed are uploaded, Google Ads automatically creates the ads people see.
See graphic below for the requirements the Responsive Display ad assets (headline, description, or image) must meet in order for your Discovery campaigns to serve.