Alright, so I have a few servers in a few data centers and right now I would like to open a web hosting company with Hosting, Dedicated Servers , VPS and VPN's, Could Hosting and so on. If somebody has any experiance with this sort of things, what exactly do I need to mange this. I search around a little bit so I would probably want to use http://www.whmcs.com/ is this all I need. Do I need something else ? If so what's that ? Thanks in advance for the answers.