When a website links to another site, it creates a connection between the two. Search engines crawl these links to discover new content and evaluate the relationships between websites. The more high-quality backlinks a site has, the more likely it is to be viewed as authoritative and trustworthy by search engines.
Backlinks work by signaling to search engines that your content is valuable and relevant. For example, if a well-known industry blog links to your article about digital marketing trends, it sends a positive signal to search engines that your content is worth considering for relevant search queries.
