The figure below illustrates the framework that the MWG established for its activity.
Figure 3: Top-Level Metrics Model
This model illustrates that whilst ISO 15288 focuses on the concurrent processes operated by stakeholders throughout a Defense System Lifecycle, it is essential also to consider the time dimension within which these processes are operated. CALS tools and techniques focus on the delivery of benefits by process improvement, but this clearly implies that the organization to which the Metrics model is applied, at whatever level, is moving from a current (As-Is) position, to a target (To-Be) by improving it's investment in environment, technology or process. Thus the role of Metrics is both to shape the goal (the changed characteristics of the To-Be position from current state), and to determine the measures of performance/achievement in the transition. Moreover, given that the Maturity model is predicated on an incremental approach to achieving the Final State Metric, a Metrics model based on phases helps significantly in focusing attention on specific areas of investment which can be predicted to deliver most benefit.
