虚拟网络提供给用户普通的LAN一样的网络，其中服务器位于物理数据中心(虚拟化或未虚拟化)、私有云以及公用云。

A virtual network gives a customer a common LAN-like network where the servers can be located in the physical data center (virtualized or not), private cloud, and public cloud.

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VPN虚拟专网是在互联网公用网络上建立私有的专用网络。

VPN Virtual Private Network is a private special network built in public net of internet.

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技术上说，VPN是指将物理上分布在不同地点的网络，通过公用骨干网连接而形成的逻辑上的虚拟子网。

In technology, VPN means the networks locating in the different places are connected by main public networks, which shape the logic networks.

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