When drawn on paper, this is a 2D representation of the three dimensions. For example, when you draw a cube on a sheet of paper, this is still 2D, but it is a 3D representation, unlike a drawing of a square. 3D movies are labeled as 3 dimensional, but they are really just a 3D representation of a 2D object.
In July 2010, CentOS overtook Debian to become the most popular Linux distribution for web servers, with almost 30% of all Linux web servers using it. Debian retook the lead in January 2012.
Much of why Debian is a strong Linux distribution comes from the core of Debian namely its package management. Everything in Debian â every application, every component â everything â is built into a package, and then that package is installed onto your system (either by the Installer, or by you).