CTR (Click-through rate)

Click-through rate (CTR) is a metric used to measure the effectiveness of digital communication, e.g., an email, social media post, or landing page. It represents the ratio of clicks to the total number of impressions, indicating the percentage of users who clicked on a link or call to action after viewing the content.

For example, in email marketing, the CTR represents the number of clicks on a link in the email divided by the number of opened emails. In social media, it represents the number of clicks on a link in a post divided by the number of people who saw the post. 

The CTR is an important metric because it indicates how engaging and relevant the content is to the audience. A high CTR indicates that the content is resonating with the audience, while a low CTR indicates that it may need improvement. CTR can also be used to measure the success of A/B testing, where two different versions of content are presented to the audience, and the version with the higher CTR is determined to be the more effective one.

While CTR is often used in advertising to measure the success of paid campaigns, it can be used in a variety of contexts to track engagement and determine the effectiveness of digital content.