LEAN: Lean originated as a lean manufacturing approach pioneered by Toyota in Japan in the 1960s under the name Toyota Production System (TPS). Today, Lean extends beyond manufacturing management and is applied across overall organizational management. By reducing waste systematically, Lean enables enterprises to build sustainable competitive advantages through consistent quality, reasonable cost structures, and on-time delivery performance.

SIX SIGMA: Six Sigma is a management methodology initiated by Motorola in the 1980s. The approach primarily concentrates on improving process quality by using statistical analysis to identify defects, determine their root causes, and eliminate sources of variation. The objective is to enhance process accuracy and minimize product defects to the lowest possible level — ideally approaching zero.

While Lean focuses on reducing waste, Six Sigma focuses on reducing defects and process variation.

LEAN SIX SIGMA (LSS) is an integrated management model that selectively combines the strengths of both Lean and Six Sigma. This combined approach has become a leading trend in performance improvement, enabling organizations to apply the most effective tools to achieve five key objectives:

• Cost reduction
• Competitive pricing
• Stable and consistent quality
• On-time delivery
• Increased profitability

Lean Six Sigma can be considered a comprehensive and flexible methodology for achieving and sustaining long-term operational excellence and business success.