Backlinks, also called “inbound links” or “incoming links,” are created when one website links to another. The link to an external website is called a backlink.
Why are backlinks important? Backlinks are especially valuable for SEO because they represent a “vote of confidence” from one site to another. In essence, backlinks to your website are a signal to search engines that others vouch for your content.
The Role of Backlinks in Search Engine Ranking