What is a subdomain?

A subdomain is a "web address" created by adding a prefix to a regular domain. For example, the following are considered subdomains: forum.example.com, dev.example.com, store.example.com, and so on. A subdomain has its own root folder and its own files, consequently, it can host a standalone site.

A subdomain can have:
- DNS records.
- email accounts with the subdomain name.

In the case of the cPanel control panel, more details about adding a subdomain can be found by accessing the article Adding a subdomain in cPanel