Link volume is the total number of links (from other websites) found linked in the website content of a particular website page. A higher link volume means more websites are linking to your content.
Link volume is important for SEO because having more backlinks can signal to search engines that your content is valuable and trustworthy. However, a high link volume of good-quality backlinks is good for websites. If there is a high volume of poor-quality links, the website won’t rank well on the search engines.