Backlink term explained
Backlinks is a link on another website that leads to any page of your site and affects its popularity.
The more backlinks your website has, the more popular and higher ranked positions in search engines for those key phrases. To obtain backlinks is quite difficult to do this, you must try to make your resource informative, useful and unique.
The number of detected backlinks each search engine can be different and depends on a number of factors (e.g., availability page on this search engines, have links to certain attributes, etc.). The number of backlinks you can look in the panel for webmasters (Google, Yandex).
Analyze backlinks of your competitors, you can determine methods of promotion, promotion effectiveness and to develop a plan for the promotion for website.