The QA environment must match the production environment as closely as possible, including hardware, operating systems, infrastructure software, configuration, and all services.

QA环境必须尽可能与生产环境一致，包括硬件、操作系统、基础设施软件、配置和所有服务。

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The reality is that infrastructure software products, such as J2EE application servers, have not yet reached the maturity level of multi-user operating systems.

事实是，基础设施软件产品（如 J2EE 应用服务器）尚未达到多用户操作系统的成熟水平。

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Legacy systems can also exist as either outdated or poorly written software applications that run on specific infrastructure components and operational environments.

遗留系统还可能以特定基础设施组件和操作环境上运行的过时软件或编写质量较差的软件应用程序的形式存在。

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At least 15 others are in Internet-related software, systems integration and infrastructure.

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They developed proprietary software systems, designed and manufactured chips, built computers and created the infrastructure that made the Internet possible.

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HotLink, a Silicon Valley startup that has developed a platform for heterogeneous and hybrid computing infrastructure, has the CIOs of Facebook, Clorox, Citrix Systems, BMC Software, Flextronics, and Electronic Arts on its advisory board.

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