After creating a campaign in the upgraded Smart+ experience, you'll be able to track your progress toward fully optimizing your ad group with steps and a recommendation usage score. Based on that score ranging from 0% to 100%, powered by data and delivery model, we'll provide recommendations to help to improve your score and attempt to improve business outcomes.
Each recommendation is designed to improve efficiency and overall campaign performance across the campaign flow based on the following:
Catalog
Budget strategy
Optimization and bidding
Budget and schedule
Audience targeting
Placements
Creative assets