External link building is the practice of getting other websites to link back to your site. These backlinks act like votes of confidence — when reputable sites link to your content, search engines see your website as more trustworthy and authoritative.
It’s a key part of SEO, especially if you want your content to rank higher in search results. But not all backlinks are equal: links from respected, relevant websites carry more weight than those from spammy or unrelated sources.
Example:
Let’s say you publish a guide on “How to Build a Data Strategy for SaaS.” If an industry publication or a well-known analytics blog links to your article in one of their posts, that’s an external backlink. It not only boosts your SEO, but can also bring qualified traffic to your site.