What is a "backlink" (inbound link)?

A backlink (inbound link) is a link that leads from someone else's site to yours.

#Example:

The site news.com has published an article, and in it there is a link to your page: <a href="https://yourdomain.com/article">Useful material</a> That is a backlink for you.

#Why it matters:

1. A signal of trust If others link to you, they consider your resource useful or authoritative.
2. Passes on link weight (PageRank) A good site = a strong link = more chances of climbing in search results.
3. Directly affects SEO This is one of the main ranking factors in Google.
4. Can bring real traffic People click the link and land on your site.

In short: a backlink is an external recommendation that both people and search engines take into account. The more quality ones you have, the better.