CTR or Click-Through Rate is a metric that measures the number of clicks a website receives from the total number of impressions or views it gets in search engine results pages (SERPs). In other words, it is the percentage of users who click on a website's link after seeing it in the search results. CTR is an important metric for SEO as it indicates how relevant and appealing your website's meta description and title tags are to the users. A high CTR means that your website is attracting more traffic and that your meta description and title tags are effectively communicating what your website is all about. Therefore, it is essential to optimize your meta descriptions and title tags to increase your CTR and improve your website's visibility in the SERPs.