{ "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Does a subdomain affect SEO?", "acceptedAnswer": { "@type": "Answer", "text": "Google treats subdomains as separate sites — subdirectories (company.com/blog) may be better for SEO consolidation." } }, { "@type": "Question", "name": "Can subdomains have their own SSL certificates?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — either individual certificates or a wildcard certificate covering all subdomains." } }, { "@type": "Question", "name": "When should I use a subdomain vs a subfolder?", "acceptedAnswer": { "@type": "Answer", "text": "Use subdomains for truly separate products/services; use subfolders to keep SEO equity on the main domain." } } ] }
Definition

What Is a Subdomain?

A prefix added to a root domain that creates a distinct web address — used to separate sections of a site like blog.reloadmode.com or app.saasproduct.com.

Related Terms

Custom Domain

DNS

Hosting

URL

SEO

Example

A SaaS company uses app.company.com for its product and help.company.com for its documentation, both as subdomains of company.com.

Synonyms:

Child domain, Prefix domain

Acronyms:

-