Why is Ubuntu good for servers?

Ubuntu Server performance

For the reasons described above, Ubuntu Server requires at least 2 GB of free storage while Ubuntu Desktop requires 25 GB. This advantage makes Ubuntu Server a great choice as a server operating system, which offers rich functionality of the original Ubuntu core.

Is Ubuntu Server faster than desktop?

Installing Ubuntu Server and Ubuntu Desktop with the default options on two identical machines will invariably result in the Server delivering better performance than the desktop. But once software comes into the mix, things change.