whats vps?

i know its to do with botting but i actually don't know what it actually does can someone give me a brief explanation?

 

Here, I found a link which will help you know what it is, what it's used for:

http://en.webk.net/aboutvps.html

 

Virtual private server. I assume people set up multiple RS bots and let it run.

 

Read this article from VPSInfinity.com's Knowledgebase

http://www.vpsinfinity.com/whmcs/knowledgebase/15/What-is-a-VPS.html

 

It's a virtual server. Typically there are multiple VPS running on a single piece of server hardware.