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Six Sigma - Wikipedia
Six Sigma (6σ) is a set of techniques and tools for process improvement. It was introduced by American engineer Bill Smith while working at Motorola in 1986. [1][2] Six Sigma strategies seek to improve manufacturing quality by identifying and removing the causes of defects and minimizing variability in manufacturing and business processes.

What Is Six Sigma? Concept, Steps, Examples, and Certification
Six Sigma, a quality-control methodology first developed for manufacturing, is now used by business and organizations of all types.

Basic Six Sigma Principles Explained
Six Sigma uses verifiable data and statistics to make decisions that can help organizations achieve measurable profit gains. It uses data to tangibly improve the quality of products and services, increasing customer satisfaction while reducing costs.

What is Six Sigma? Principles, Methodologies, and Levels
TL;DR: This guide explains what is Six Sigma, breaks down the DMAIC and DMADV methods, highlights the core principles and techniques for reducing defects and variation, and shows how sigma levels and DPMO track performance and sustain long-term improvements.

What is Six Sigma Methodology? [2026/27]
Six Sigma is a defined and disciplined business methodology to increase customer satisfaction and profitability by streamlining operations, improving quality and eliminating defects in every organization-wide process.

Six Sigma Definition - What is Lean Six Sigma? | ASQ
Six Sigma is a method for disciplined quality improvement that provides the tools organizations need to improve the capability of their business processes.

What Is Six Sigma? Definition, Benefits & How It Works (2026)
Six Sigma is a quality management strategy that uses data and statistics to reduce variation, eliminate defects, and improve performance. It enables organizations to achieve consistent results and deliver high-quality outcomes by applying a structured improvement process like DMAIC.