六西格玛与CMMI
提高竞争，更高的成本以及对产品和服务质量一致的需求，导致采用旨在提高效率，降低错误，保持质量水平以及改善过程和程序的方法和技术。六西格码和能力成熟度模型集成（CMMI）是两种这样的技术，旨在改善组织流程以更有效地实现组织目标和目标。尽管六西格玛和CMMI都为组织增加了价值，并在效率和成本方面节省了大量资金，但实施这些方法的举止彼此截然不同。该文章清楚地概述了每种技术，并突出了六西格玛和CMMI之间的相似性和差异。
What is Six Sigma?
Six sigma refer to a set of techniques and methodologies used in the improvement of processes with the aim of reducing errors and failure rates. According to the six sigma concept, a defect is any process or output that falls short of customer specifications. Six sigma aims at improving the quality of the firm’s various processes and procedures by firstly identifying causes for defects, then removing those causes and minimizing the variability in the business processes. The term six sigma has been derived from statistics and is a method used in statistical quality control to improve the process capability of a particular process. Process capability is an index that measures the number of parts that are produced to specifications.
六西格玛（Six Sigma）是摩托罗拉（Motorola）于1986年开发的质量控制计划的一部分，旨在将制造缺陷降低到每100万的缺陷不超过3.4个缺陷。在六西格码下，有两个主要概念。它们是DMAIC和DMADV。DMAIC代表定义，测量，分析，改进和控制。DMADV代表定义，测量，分析，设计和验证。DMAIC是针对当前现有的流程实施的，这些流程尚未达到规格，需要与六西格玛概念保持一致。DMADV在开发新工艺或产品至六个Sigma质量水平时实施。
What is CMMI?
The CMMI (Capability Maturity Model Integration) is a process improvement model which operates based on the principal that the quality of a particular process, system or product is mostly based on the quality of the processes that are involved in its development and maintenance. CMMI is a method that is used to guide and influence the improvement of processes and development of processes that meet organizational goals. The CMMI was developed by the Carnegie Mellon University on behalf of the U.S. Government. CMMI consist of three areas which include:
- Product and service development
- Service establishment, management and delivery
- Product and service acquisition
CMMI确定了5个成熟阶段，这些阶段定义了一个过程的成功程度。在CMMI下，特定过程的所有元素都被分解为过程区域，这些过程允许公司确保对过程中的所有元素进行适当的评估和改进。该模型还具有16个过程领域，可以根据组织的特定需求和组织目标量身定制。
What is the difference between Six Sigma and CMMI?
Six sigma and CMMI both add value to organizations by drastically reducing errors, costs, wastage and inefficiencies. Both techniques aim to improve organization processes so that specific goals and targets can be met faster and more effectively. The main difference between six sigma and CMMI is that CMMI was developed for the software industry and, therefore, has limited application in comparison to six sigma that is more broadly used. Another main difference between six sigma and CMMI is that the six sigma approach includes techniques used to identify, measure, keep track of, and finally evaluate the effectiveness of process improvement activities. CMMI, on the other hand, is a set of guidelines with ‘how to’ approach of process improvement. CMMI focuses on the process improvement within specific process areas and is therefore domain specific. In contrast, six sigma takes a wider approach in improving processes and eliminating defects on an organizational level across various domains.
Summary:
CMMI vs Six Sigma
• Six Sigma and CMMI (Capability Maturity Model Integration) are two such techniques that aim to improve organizational processes to meet organizational goals and objectives more effectively.
• Six sigma refer to a set of techniques and methodologies used in the improvement of processes with the aim of reducing errors and failure rates.
• According to the six sigma concept, a defect is any process or output that falls short of customer specifications.
• Six sigma improves the quality of a firm’s various processes and procedures by firstly identifying the causes for defects, and then removing those causes and minimizing the variability in the business processes.
• The capability maturity model integration (CMMI) is a process improvement model that is used to guide and influence the improvement and development of processes that meet organizational goals.
• The CMMI has identified 5 stages of maturity that define how successfully a process is working. This model also has 16 process areas that can be tailored to the specific needs and organizational goals of organizations.
•六sigma和CMMI之间的主要区别在于，六sigma方法包括用于识别，测量，跟踪并最终评估过程改进活动的有效性的技术。另一方面，CMMI是一组指南，具有“方法”改进方法。
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