Microsoft Windows, Microsoft Windows Server , Microsoft System Center Configuration Management- Install and Configuration Active Directory, DHCP, DNS, Group Policy, Print Server, WSUS, FS , Distributed File system (DFS), File Server Resource (FSR) v.s Proxy Server-TMG, CC_Proxy Virtuualization- (Hyper V Vmware Sphere 5.1, 5.5) ESXI-Install and Configuration Veam Backup, LYNC server