The Six Sigma concept and Lean production are some of the principles of quality management which include methods and tools for error-free and defective production. The paper presents quality management systems at all levels, especially in production in order to achieve complete quality management. Implementing such methods can prevent resource wastage. Within Lean production, we can distinguish methods and strategies such as: Just in time management, Jidoka, Kaizen, Kanban, Heijuka and Takt-time. The term Lean means less of everything (less production facilities, less storage space, less time spent, less human effort, less investment and capital). It means lean production with fewer resources and constant quality. Lean production eliminates all sources of waste in the production process, which contributes to the elimination of scrap. Losses in production can be classified into several categories: defective product, production that does not keep up with demand, waiting and wasting time, unused talent, transportation, storage, unnecessary movement of persons or things, unnecessary production. The historical aspect of Lean production itself is presented, as well as the advantages and disadvantages between mass and Lean production and why Lean production dominates in Japan. Understanding these methods can greatly benefit managers and leaders of production processes. These methods ensure that every worker involved in the production process makes the most of his abilities and talents. These methods and their principles are now used in the field of information technology. One such is the agile approach that emerges much later (with the advent of information technology) and takes over the basic principles of Lean method.