Week 2: Timeline of Management Styles By Bert Hamlin 1940 Kanban Emerges (Taiichi Ohno) Period: 1940 to 2021 Timeline 1970 1970 Waterfall First established by Winston W. Royce as an approach to building a system of executing a project. 1986 Six Sigma Emerges (Motorola, Inc.) 1991 Lean Principals (James P. Womack, Daniel T. Jones and Daniel Roos) 1993 Scrum Process Emerges 1996 PRINCE2 Project Management (UK Preferred PM Methodology) 2001 Agile (Manifesto) Agile ‘Software Development’ Manifesto