1. What is Six Sigma? There is a business concept related to this aspect of quality called Six Sigma. Bruce (2002) defined it as follows: “A term used is a statistic to represent standard deviation, an indicator of the degree of variation in a set of measurements or a process. » (p. 182) It cannot be easily said which organizations in the industrial laundry sector follow Six Sigma, but it can be inferred that most of them apply such a technique. In Sex Sigma, the general rule is that the defect or error made in a product or service should not exceed 3.4 standard deviations. This represents 3.4 defects per million opportunities. (Bruce, 2002, p. 2) Six Sigma is a set of tools, processes and techniques that contribute to the improvement of any business process. Its ideal goal is to perfect processes that can make it more efficient and effective. It must follow a disciplined and systematic approach to achieve the desired efficiency and effectiveness. Six Sigma relies heavily on the data available from the organization; it is therefore important that this data is stored correctly and can then be accessed quickly and efficiently by group members. Six Sigma also attempts to eliminate any defect in the process or system, in which it arrives with six standard deviations (hence the term six sigma) just between the mean and the desired value. The Six Sigma process can be applied in almost any process, from manufacturing to transactional. It also doesn't matter whether the company offers a product or service. The concept of Lean Six Sigma can be illustrated by creating a table. For example, the processes required to make a table, such as cutting wood into pieces, shaping the wood pieces, performing sanding assembly...... middle of paper ...... must It should be noted that the process of Lean management was first applied in the manufacturing field. Some analysts claim that its particular business management process originated from the Toyota company's car production system. It should be noted that the Japanese are very keen to adopt anything that would reduce costs and eliminate waste. It is therefore not surprising that the Japanese are known for their simplicity, design and minimalist vision of things. However, today it has evolved from the field of manufacturing and could now be applied to the field of management. Before discussing the essential principles of Lean management, it would be better to first define it clearly. Bradley's book in question didn't really give a precise and concise definition of Lean. Instead, he tried to define this concept of business management through examples..