CMMI or Lean Six Sigma: Which Comes First?
Case 1 Results
The following areas are presented for summary comparison:
- Measurement & Analysis process area – All goals were satisfied with all practices implemented, and few improvement opportunities. Measurement was driven from the Corporate level and tracked monthly versus specific goals
- Maturity level 4 process areas (2) – All but two goals were satisfied. All practices were largely implemented with three improvement opportunities. These were also driven, managed and monitored from the Corporate level
- Maturity level 5 process areas (2) – All but two goals satisfied . All practices were largely / partially implemented with two improvement opportunities. These improvement opportunities had already been identified from Lean Six Sigma and were being addressed
- Follow-up accomplishments – The Group completed a successful maturity level 2 appraisal as planned for calendar year objectives. The maturity level 3 appraisal was also successful nine months later. Plans to proceed to higher maturity levels were halted when the organization was acquired by a large multi-national conglomerate.
Case 2 Results
- Measurement & Analysis Process Area – All goals and practices were compliant with only one improvement opportunity. This surrounded the formal definition and documentation of the data collection, storage and analysis processes
- Level 4 Process Areas (2) – All but two goals were compliant. All practices were largely / partially compliant with five improvement opportunities. The improvement opportunities had been identified prior to the CMMI appraisal and were partially implemented. This would not likely have been the case had the organization not been well into Lean Six Sigma deployment
- Level 5 Process Areas (2) – All but one goal was compliant. All practices were largely compliant with two improvement opportunities. The improvement opportunities focused on the need to drive Level 5 improvement from the Level 4 data, as opposed to the already operational systematic and ad hoc improvement practices in place
- Follow-up accomplishments – The Group was appraised at CMMI Level 3 three months later and is planning for a Level 5 Appraisal this quarter.
Case 3 Results
- Measurement & Analysis Process Area – All goals and practices compliant with one minor improvement opportunity. This was in Goal 1 and was caused by the lack of software measures currently driven from the Corporate level
- Level 4 Process Areas (2) – All but one goal compliant. All practices were largely compliant with three improvement opportunities. These involved the baselining additional sub-processes across the software lifecycle
- Level 5 Process Areas (2) – All goals and practices were found to be compliant
- Follow-up accomplishments – Group was appraised at Level 3 one month later and Level 5 eight months following that event




