ISO 13053-1:2011描述了一种称为六西格玛的业务改进方法。该方法通常包括五个阶段:定义、测量、分析、改进和控制（DMAIC）。 ISO 13053-1:2011为六西格玛项目执行期间使用的DMAIC方法的每个阶段推荐了首选或最佳实践。它还建议如何管理六西格玛项目，并描述了参与此类项目的人员的角色、专业知识和培训。它适用于使用制造流程以及服务和事务流程的组织。

ISO 13053-1:2011 describes a methodology for the business improvement methodology known as Six Sigma. The methodology typically comprises five phases: define, measure, analyse, improve and control (DMAIC). ISO 13053-1:2011 recommends the preferred or best practice for each of the phases of the DMAIC methodology used during the execution of a Six Sigma project. It also recommends how Six Sigma projects should be managed and describes the roles, expertise and training of the personnel involved in such projects. It is applicable to organizations using manufacturing processes as well as service and transactional processes.