What is a subdomain?

A subdomain is a subdivision of your main domain.

Example: If your domain is midominio.com, then blog.midominio.com and tienda.midominio.com are subdomains.

What is it for?

• Separate sections of the site (blog, store, support, etc.).
• Publish apps or test environments (dev.midominio.com).
• Organize services without purchasing another domain.

Recommendations

• Use short and clear names.
• Configure DNS and SSL for each major subdomain.
• Avoid creating unnecessary subdomains to avoid complicating administration.

Useful Examples

• blog.tudominio.com for content
• soporte.tudominio.com for help desk
• app.tudominio.com for panels or internal systems

Recommended readings

• How to create and redirect a subdomain?
• Redirection from one domain to another domain