Subdomains can affect your SEO both positively and negatively, depending on how you use them.

Search engines treat subdomains as separate websites, which allows you to target specific keywords and tailor content for different audiences or purposes. This can be useful if you want to create clearly separated sections, such as blog.example.com or store.example.com.

However, because search engines index subdomains independently, you’ll need to manage SEO efforts separately for each one. That means creating quality content, building backlinks, and optimizing on-page elements for every subdomain—just like you would for a standalone website. Without consistent effort, subdomains may not perform as well as expected in search results.

For more information on subdomains in cPanel, check out our detailed tutorial How to create subdomains in cPanel.