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SEO

Subdomain

Definition in short: A separate part of your domain name placed before the main domain, such as blog.example.com.

What is a subdomain?

A subdomain is a prefix added to the main domain name that splits a website into separate parts, such as blog.example.com or shop.example.com. Each subdomain can run on its own server or system. Search engines may treat a subdomain as a separate site, which has consequences for SEO.

Why is a subdomain important?

  • Technical freedom: a store, help center or blog can run on a different platform.
  • Clear separation: useful for parts with a different purpose or audience, such as a customer portal.
  • A point of attention: authority and links sometimes have to be built up again.

Examples of a subdomain

  • blog.example.com
  • shop.example.com
  • help.example.com

How do you choose between a subdomain and a subfolder?

Choose a subdomain when a section is technically separate from your main site, such as a store on a different platform or a customer portal. For a blog or service pages that belong to your brand, a subfolder is usually simpler, because everything then sits under one domain. See technical SEO.