 Six Sigma:
Six sigma is the structured application of tools and techniques applied on project basis to achieve sustained strategic results. The six sigma approach for projects is DMAIC (define, measure, analyze, improve and control). These steps are the most common six sigma approach to project work.
Benefits of Six Sigma
There are numerous benefits of six sigma as a way to address issues and problems. Among the benefits of six sigma is the decrease in defects that are allowed to reach the customer. You can get some sense of the benefits of six sigma by reviewing some six sigma projects. Other benefits of six sigma include:
- Focus on customers.
- Improved customer loyalty.
- Reduced cycle time.
- Less waste.
- Data based decisions.
- Time management.
- Sustained gains and improvements.
- Systematic problem solving.
- Employee motivation.
- Data analysis before decision making.
- Faster to market.
Team building.
CMMI : 
It is a guide for implementing development practices that continuously improve software quality. This has been created by SEI (Software Engineering Institute) – a research and development centre operated by Carnegie Mellon University.
"CMMI" refers to the integration of diverse tool sets and appraisal methods related to CMM.
CMMi builds on and extends on the best practices of the:
- Capability Maturity Model for Software (SW-CMM);
- Systems Engineering Capability Model (SECM);
- Integrated Product Development Capability Maturity Model (IPD-CMM);
- Supplier Sourcing Capability Maturity Model (SS-CMM).
CMMi will help Software and Systems Engineering Companies to Study, Define, Implement, Improve and Appraise their internal Processes to result in improvement of the Development Cycle Time, Timely deliveries to Customers, Reduction in Schedule, Effort and Cost variances, reduced Defect levels, reduced Rework, improved Productivity and Profitability.
GMP/BMP:
W.H.O. defines Good Manufacturing Practices (GMP) as "that part of quality assurance which ensures that products are consistently produced and controlled to the quality standards appropriate to their intended use and as required by the marketing authorization". GMP covers all aspects of the manufacturing process: defined manufacturing process; validated critical manufacturing steps; suitable premises, storage, transport; qualified and trained production and quality control personnel; adequate laboratory facilities; approved written procedures and instructions;
The guiding principle of GMP is that quality is built into a product, and not just tested into a finished product. Therefore, the assurance is that the product not only meets the final specifications, but that it has been made by the same procedures under the same conditions each and every time it is made.
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