A link from another website pointing to yours. One of the most important signals in Google's ranking algorithm. Quality matters far more than quantity.
A backlink is a hyperlink on another website that points to your website. When Site A links to Site B, Site B receives a backlink from Site A. Search engines — particularly Google — treat backlinks as votes of confidence: when credible, relevant sites link to your content, it signals that your content is trustworthy and valuable. Backlinks have been a core component of Google's ranking algorithm since the search engine launched in 1998.
Not all backlinks are equal. A single backlink from a high-authority, topically relevant website (a major industry publication, a regional news outlet, a respected trade association) carries far more ranking weight than hundreds of links from low-quality directories or irrelevant sites. Google has become increasingly sophisticated at identifying and discounting manipulative link schemes. Today, quality and relevance are the primary determinants of a backlink's value.
For local service businesses, the most valuable and achievable backlinks typically come from: local business directories (Google Business Profile, Yelp, BBB), local news coverage, industry associations, chamber of commerce listings, and vendor or partner websites. Guest posts on industry blogs and resource page placements are also common tactics. The goal is earning links that a real, credible site would naturally give.
Backlinks remain one of the hardest SEO factors to control — you can't force other sites to link to you. The most reliable approach is creating genuinely useful content that people want to reference, being active in local business communities, and building relationships with publications and organizations in your space. Shortcuts like link buying or link farms risk Google penalties that can set back a site's rankings significantly.