Reuse of proven flexible patterns in the development and creation of systems can both ensure consistency and quality and reduce maintenance costs by having a single source to update with changes.

在系统的开发和创建过程中，重用经过证明具有相当灵活性的模式，可以确保一致性和高质量，并且减少维护成本（因为只需要对一个数据源进行更新）。

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The IT workforce is responsible for systems architecture, testing, maintenance, application development, operational procedures and a gamut of innumerable other activities.

IT 工作人员负责系统体系结构、测试、维护、应用程序开发、操作过程和所有其他活动。

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SCRUM is a management, enhancement and maintenance methodology for an existing system. SCRUM will address new or re-engineered systems development efforts at a later date.

SCRUM是一种对已存在系统的管理，提高和维护的方法。在不久的将来，SCRUM将致力于新的或重组的系统开发。

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Also, considering the speed of evolution of mobile device features and operating systems, evolving field requirements, ongoing maintenance of multiple platforms can cost multiple times the initial development budget over a five-year period.

FORBES: A Five-Point Checklist For CIOs Looking For A Mobile App