ISO 21505:2017描述了项目、计划和投资组合的治理环境，并为项目、计划和投资组合的治理提供了指导。ISO 21505:2017还可用于评估、保证或验证项目、计划或投资组合的治理职能。 ISO 21505:2017适用于影响、影响或决定项目、计划和投资组合治理的管理机构、行政和高级管理人员。它还旨在为项目、计划和投资组合的指导者提供指导，如赞助商、指导委员会、投资组合所有者和项目管理办公室。 项目、计划和投资组合经理以及参与项目、计划和投资组合的开发和实施的利益相关者也可以使用它。对这个话题感兴趣的其他受众包括那些在项目、计划和投资组合中提供建议、通知、协助或工作的人。

ISO 21505:2017 describes the context in which the governance of projects, programmes and portfolios is conducted and provides guidance for the governance of projects, programmes and portfolios. ISO 21505:2017 can also be used for assessment, assurance or verification of the governance function for projects, programmes or portfolios. ISO 21505:2017 is intended for governing bodies and executive and senior management who influence, impact or make decisions regarding the governance of projects, programmes and portfolios. It is also intended to provide guidance to those who direct projects, programmes and portfolios, such as sponsors, steering committees, portfolio owners and the project management office. It also can be used by project, programme and portfolio managers, as well as stakeholders involved in the development and implementation of projects, programmes and portfolios. Other audiences who can have an interest in this topic include those advising, informing, assisting or working within projects, programmes and portfolios.