Wikipedia
LeanCMMI is an approach to software engineering process improvement that integrates agile computing methods with process design and deployment for organization's wishing to improve software engineering capability and achieve a maturity level two or three rating based upon the Software Engineering Institute's Capability Maturity Model Integration or CMMI.
Developed by Broadsword (1) LeanCMMI is based on Lean Engineering and the same concepts that spawned Extreme Programming (XP), Scrum, and Crystal, and traces its roots back to Edward Demings' "Theory of Profound Knowledge." Based upon the principle of "Just Enough Not Too Much," LeanCMMI maps the software process improvement journey across three major releases, each with seven iterations based on three "dimensions" of software process improvement each with equal weight and with equal importance to the success of the program.