Link-building services promote your website or specific content to secure backlinks from high-authority referring domains. Backlinks are very important because they signal (tell) the search engines that your site is credible and marks itself as an authority in your industry.
Building links is just one of the many SEO tactics developed besides local SEO and on-page SEO to increase your ranking signals. SEO link building allows you to create new relationships with authority sites, diversify traffic sources, and boost revenue streams.
There is no secret that websites that obtain high-quality backlinks from relevant referring domains earn higher rankings on search engines than websites that don’t. More importantly, incoming links from sites with high domain authority (DA) deliver more value to your web pages.