The original DoD Continuous Process Improvement (CPI) Transformation Guidebook was published in May 2006. The Deputy Secretary of Defense, in the Guidebook's cover memo, endorsed it as a resource for all DoD organizations to help design andmanage CPI efforts and to foster a culture of continuous improvement throughout the Department. This July 2008 CPI/Lean Six Sigma (LSS) Guidebook updates the May 2006 document. It reflects the inputs of a cross-agency DoDteam as well as major developments that demonstrate further institutionalization of a CPI/LSS culture within the DoD.We have placedadditional focus and emphasis on adapting continuous process improvement principles and implementing Lean Six Sigma and other effective methodologies.