Not really. In the broadest sense, a "server" is simply a computer that is running services. Modern operating systems tend to run loads of things as services, even if they're only accessible on the current machine. Confluence is another service that you've added - it doesn't make the computer a "server" any more or less than the other services running on it.
Why do you ask?
Do you use templates with Confluence? Take part in a remote 1-hr workshop. You'll receive USD $100 for your time! We're looking for people to participate in a remote 1-hr workshop...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs