In its simplest form, a backlink can be described as a hyperlink that is located on one website and points to another website. For instance, if a health blog with tons of followers links to your article that is about nutrition, then you have bagged a backlink for your site. This gives search engines the impression that visitors would benefit from content shared on your site thus promoting it.
Another example may be finding that an online newspaper has used some of the information in our research to write a story. This not only brings visitors to your site but also improves your site’s authority to search engines and visitors.