本标准适用于商业或非商业系统或其部分的工程或再造；b任何系统，无论大小，简单或复杂，软件密集型或非密集型，以前的或前所未有的；c由硬件、软件、固件、人员、设施、数据、材料、服务、技术或过程（或其组合）组成的系统；dA新系统或遗留系统，或其部分。本标准的要求，或指定的子集，旨在由制定本标准所采用的过程和过程要素的项目实施政策和程序的项目应用。本标准的要求可定制如下:a过程-过程可定制为适用于给定类型的项目或系统。例如，系统利用过程通常不以与完整系统相同的方式应用于概念系统或原型系统- 批量生产系统。活动——可以对活动进行定制，以反映项目制定的具体方法，其中修改后的活动仍然实现预期的过程目的和过程结果，包括给定项目或系统的不同生命周期方法，其中修改仍能达到活动的预期目的。

This standard is applicable to the engineering or the reengineering of:aCommercial or non-commercial systems, or portions thereof;bAny system, small or large, simple or complex, software-intensive or not, precedented or unprecedented;cSystems made up of hardware, software, firmware, personnel, facilities, data, materials, services, techniques, or processes (or combinations thereof);dA new system or a legacy system, or portions thereof.The requirements of this standard, or a designated subset, are intended to be applied by projects establishing policies and procedures for project implementation of the adopted process and process elements of this standard.The requirements of this standard may be tailored as follows:aProcesses – Processes may be tailored to be applicable for a given type of project or system. For example, the System Utilization Processes typically don’t apply for conceptual or prototype systems in the same manner as for full-volume production systems.bActivities – Activities may be tailored to reflect the specific approach established by a project, where the modified Activities still achieve the intended Process Purpose and Process Outcomes.cTasks, Inputs, and Outputs – Tasks, Inputs, and Outputs may be tailored to reflect the specific approach or methods established by a project, including different life cycle approaches for a given project or system, where the modifications still achieve the intended purpose of the Activity.