RHEL/CentOS, Fedora, Ubuntu, Debian, and OpenSuse have far more similarities than differences, but choosing the wrong one for the job can make life much harder Unlike most other desktop and server operating systems, Linux comes in a wide variety of flavors, each based on a common core of the Linux kernel and various GNU user space utilities. If you’re running Linux servers — or Linux desktops, for that matter — you should understand the important differences and be discerning about which flavor of Linux is best suited to any given situation.
Source: Tech