桌面与网络外包服务: (Network and Desktop Outsourcing Services)，以下简称NDOS。
DOS是指企业或单位将内部的IT系统，包括各类IT硬件设备，以及网络产品和系统的维护、维修和运营管理服务整体或局部外包给某个或几个服务商的行为。从服务商的角度上讲，是服务商向其客户提供的一种外包服务。
The Network and Desktop Outsourcing Services, call the NDOS as follow.
The NDOS represents that enterprises or units outsource the maintenance, maintaining and management of their internal IT system which includes every kind of IT hardware and equipments, the networking product and system wholly or partially to one or several ISP(s). At the site of ISP, it provides outsourcing services toward its customer.
