Lean manufacturing is the method to drive the costs down. Thesis concerns historic development of lean manufacturing methods giving special attention to Taylor's scientific management, husbands Gilbreth motion studies and Ford's production schema for "T" model. From today praxis the thesis is considering TPS (Toyota Production System) developed by Toyota Motor Corporation as an application of lean manufacturing. It was further developed by James Womack and Daniel Jones in their lean manufacturing theory analysis. The thesis introduces the example about fictitious HAD Corporation that is constructed on the bases of three real IT global companies. Analysis applies Womack's and Jones theory of lean manufacturing including five steps: value, value stream, flow, pull, perfection. The thesis can serve as an overview of lean manufacturing history, current methods and case study.