Click-Through Rate (CTR) is the ratio of users who click on a specific link compared to the total number of users who view the page, email, or advertisement. It is a key metric for measuring the effectiveness of digital marketing campaigns.

Formula: CTR = (Total Clicks / Total Impressions) × 100

CTR is commonly used to measure:

• Search ads: How often people click your ad after seeing it in search results
• Email campaigns: Percentage of recipients who click links in your emails
• Organic search: How often users click your search result listing
• Display ads: Effectiveness of banner and visual ads

Higher CTR generally indicates more relevant and compelling content or ads.