Backlink

A backlink is a hyperlink from one website to another, used by search engines as a signal of credibility and authority. Backlinks remain among Google's most important ranking signals in 2026, but quality, relevance, and the authority of the linking domain matter far more than volume, and manipulative link schemes carry real penalty risk. Authoritative links also reinforce the trust and authoritativeness assessed under E-E-A-T.

Source: developers.google.com