First of all, it’s necessary to sort out “what is a backlink”. There is no need to explain everything in detail. The main thing to understand is what it is for and how it works. A backlink is a kind of Internet manipulator. It links one particular site with other external websites which contain links to this site. In other words, when you visit external sites they will lead you to that particular site. Backlinks are used for SEO purposes to optimize a website in a proper way.
SEO backlinks are an essential part of the search engine optimization process. They help search bots to crawl your site and rank it correctly to its content. Each backlink is a part of a ranking puzzle. That’s why every website owner wants to get as much as possible backlinks due to improving website’s SEO ranking factors. It’s a type of citation or hyperlink used in the text.
Link juice
This is the value of the link to the page being promoted, which is installed on a third-party resource. Link weight is an important parameter that should be considered in the process of website optimization. It is used by search engines to assign a website a higher status (domain authority).
In fact, dofollow and nofollow parameters are used to point search robots whether it should index specified link or page, whether to consider this link as a backlink. From a technical point of view