CMMI(第2讲).ppt

CMMI第二讲模型概要 南京大学软件学院 荣国平 2005-12-12 ronggp@software.nju.edu.cn Agenda The Structure of the CMMI Staged representation Generic Goal and Generic Practice Process Area Contents Structure of the CMMI Staged Representation v1.1 Structure of the CMMI Staged Representation v1.2 The Structure of the CMMI Staged Representation Maturity Levels PAs Generic Goals Generic Practices Specific Goals Specific Practices Maturity Levels A maturity level is a well-defined evolutionary plateau on the path to becoming a mature organization. There are five maturity levels. Each level is a layer in the foundation for continuous process improvement. The Maturity Levels Benefits of Level 1 Level 2 vision Level 2 benefits --Managers Level 2 benefits --Developers Level 3 vision Level 3 benefits--managers Level 3 benefits--developers Level 4 Vision Level 5 Vision Maturity Levels Cannot Be Skipped A level provides a necessary foundation for effective implementation of processes at the next level. Higher level processes are easily sacrificed without the discipline provided by lower levels. The effect of innovation is obscured in a noisy process. Higher maturity level processes may be performed by organizations at lower maturity levels, with risk of not being consistently applied in a crisis. Process Areas Process Areas (PAs) are clusters of relatedpractices performed collectively to achieve a set of goals. They are the major building blocks in establishing the process capability of an organization. Each process area has been defined to reside at a given maturity level. Process Areas by Maturity Level Example: Specific Goal and Specific Practice Specific Goal (from Requirements Management PA) Requirements are maintained and accurately reflected in project plans, activities and products. Specific Practice (from Requirements Management PA) Maintain the traceability of requirements to their source requirements. Example: Generic Goal and Generic Practice Generic Goal (from Maturity Level 2)