Which Linux distribution is suitable for serverside development and somewhat easy to use? [closed]

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http://serverfault.com – I need to setup a Linux-based server which is going to be the backend for our web services. This is what I need: (In order of importance) A GUI to manage applications and files It would be running a custom built C++ server Probably also the LAMP stack, if needed. I would be trying out ERP or other serverside software on it also (optional). Which Linux distribution do you recommend for such a use-case, considering I'm not an expert at any Unix-like OS (a week of experience with CentOS, some experience with Ubuntu). This is what I understand about each distro: Ubuntu - easy to use, the (HowTos)