Both Relevance Score and Average Newsfeed Position can offer additional metrics for you to optimize against. Higher relevance scores can directly lead to lower costs and higher ROI.
Ad Relevance Score
Relevance Score is based primarily around user feedback. It is a combination of positive feedback (sharing/liking the ad, visiting your website, complete a conversion, etc) and negative feedback (hide the ad, etc).
When your ad's score is high, it's more likely to be shown to your audience than other ads. You also pay less to reach more of your target audience. The score will range from 1 to 10. 10 means Facebook estimates your ad is highly relevant and 1 means they estimate your ad isn't very relevant. The score is updated as people interact and provide feedback on the ad.
You'll be able to see this score once your ad has had about 500 impressions.
Average Newsfeed Position
It may seem a bit obvious but the higher your ad shows in a user's newsfeed, the more likely they are to click. You can pull this data into your StitcherAds data table when comparing ads and optimizing delivery.