A metric used by ad platforms to rate the relevance and quality of your ads.
Quality Score is Google Ads' rating of your ad and landing page quality on a 1-10 scale. Higher Quality Scores earn you better ad positions at lower costs per click. It's one of the most impactful levers for Google Ads performance — a Quality Score of 8+ can reduce your CPCs by 30-50% compared to a score of 5.