
What is link building and why does it matter?
Link building is the set of actions to get other websites to link to yours. It is the main part of off-page SEO: what happens outside your site and tells Google that others trust you. The guide to on-page and off-page SEO explains how it fits with the rest of the work.
Google does not publish the exact weight of links, but it still uses them to measure the authority of a page. A link from a site relevant to your industry, with related content, is worth far more than dozens of links from unrelated sites. That is why link building done well is slow and selective: it looks for quality, not volume.










