CTR stands for Click-Through Rate and measures the percentage of users who clicked an ad.

Ad relevance measures how closely an ad matches user intent and keywords.

A higher Quality Score can reduce CPC and improve ad rankings.

Quality Score is Google’s rating of ad relevance, landing page experience, and expected click-through rate.

Negative keywords prevent ads from showing for irrelevant searches.

Keyword targeting allows ads to appear when users search specific terms.

Behavioral targeting uses user actions and online behavior to personalize ads.