Six Sigma is a set of practices originally developed by
Motorola to systematically improve processes by eliminating defects. A defect is defined as nonconformity of a product or service to its specifications.While the particulars of the methodology were originally formulated by
Bill Smith at Motorola in 1986, Six Sigma was heavily inspired by six preceding decades of quality improvement methodologies such as
quality control,
TQM, and
Zero Defects. Like its predecessors, Six Sigma asserts the following:Continuous efforts to reduce variation in process outputs is key to business successManufacturing and business processes can be measured, analyzed, improved and controlledSucceeding at achieving sustained quality improvement requires commitment from the entire organization, particularly from top-level management
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A data driven quality strategy for improving processes and an integral part of a Six Sigma quality initiative. DMAIC is an acronym for define, measure, analyze, improve and control.