Which metric is used to gauge user engagement?

The Click-Through Rate (CTR) is a key metric used to gauge user engagement because it measures the percentage of users who click on a specific link out of the total number of users who view a page, email, or advertisement. A higher CTR indicates that the content is compelling and relevant to the audience, suggesting strong interest and engagement with the material being presented.

In contrast, while website traffic provides an indication of the volume of users visiting a site, it does not reflect how engaged those users are with the actual content. Cost per Acquisition (CPA) is a financial metric that focuses on the cost-effectiveness of acquiring new customers rather than measuring user interaction. Frequency refers to how often an advertisement or message is displayed to the same user, which does not directly indicate the level of user engagement or interest. Therefore, CTR stands out as a direct measure of how effectively content resonates with the audience, highlighting its importance in assessing user engagement.