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.
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
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.
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.