Application developers can then write to a virtualization layer.

应用程序开发者可以面向虚拟层来编程。

youdao

A virtual appliance is the software and hardware of a real computer appliance, but hosted inside a virtualization layer.

一个虚拟设备就是一个真实计算机设备的软件和硬件，但不同的是前者依托于一个虚拟化的层中。

youdao

This lets administrators deploy and move application servers at a virtualization layer level instead of at the physical machine level.

这使得管理员可以在虚拟层，而不用在机器物理层，部署和迁移应用服务器。

youdao

By bringing virtualization up from the hardware layer, we see is companies can run 2, 3 4 or even 8 times more Java apps per server.

FORBES: Lousy London Economy Good For A Data Center Density Enhancer

Typically this means owning the management layer, through virtualization, though of course companies like Cisco make a case for the network among computers as the critical part.

FORBES: IBM's Cloud Expansion