1. Simplicity, 2. Automation & 4. Reach
The benefits of using Responsive Display Ads are Simplicity, Automation and Reach.
More information:
Google uses a machine learning model to determine the complete integration of assets into each ad slot. Ads are compiled by Google automatically to adjust their size, appearance, and format to fit any native or non-native ad space.
You can reduce your overhead to manage the ad portfolio within ad groups and campaigns and give more time to improve performance.