What platform does facebook function under?

[Richard]

I guess I mean, how is it facebook has unlimited, infinite space?

[?]

Hi Richard,
I really have no idea what their using but here is what I think.

I think they use their own servers in their building (the facebook building) to host http://www.facebook.com
So they can buy lots and lots of hdd for their servers to hold Facebook.

Once again, this is just what I think they use, I have no idea what they really use.

[Tyler]

They have their own specifically built servers for the website to be hosted.
Each server contains massive hard drives to hold the amount of space their using.