What are SEO backlinks?
If we divide the Internet into two categories, content and links between content, we conclude that search engines need a way to determine which pages are most relevant to certain search terms. A ranking system is needed.
The quality and number of backlinks that point to a page become a factor in ranking a page. Backlinks are essentially a voice of trust from one website to another. The better the backlinks you get (the linking website has a good reputation), the more favorable your website will be in the eyes of search engines. This in turn leads to improved rankings.