There are two main types of backlinks: dofollow and nofollow. Dofollow backlinks are the default type of link and pass link equity, or "link juice," to the destination website. This means that search engines consider these links as votes of confidence and take them into account when evaluating a site's authority.
Nofollow backlinks, on the other hand, do not pass link equity. These links are typically used for paid advertisements, sponsored content, or user-generated content where the website owner does not want to endorse the linked site. While nofollow links may not directly impact rankings, they can still drive referral traffic and improve brand awareness.