| Subject | English | Chinese simplified |
| comp., MS | custom OS image | 自定义 OS 映像 (The user-customized virtual hard disks (VHDs) that define the operating environment hosted by the VM role) |
| comp., MS | guest OS | 来宾 OS (The operating system running on a virtual machine) |
| comp., MS | Mac OS | Mac 操作系统 (The name given to the Macintosh operating system, beginning with version 7.5 in September 1994, when Apple started licensing the software to other computer manufacturers) |
| comp., MS | OS upgrade mode | OS 升级模式 (The options for applying guest OS upgrades to the VMs. Available options are automatic, in which the OS is upgraded whenever a new guest OS is released in Windows Azure, and manual, in which the user chooses when to upgrade the VMs and what guest OS version to upgrade to) |
| comp., MS | Windows OS Loader | Windows OS 加载程序 (A Boot Configuration Data (BCD) application object) |