7 - CBAM:Cost Based Analysis Model 03/15/10 1 Interaction...

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03/15/10   1 CBAM:Cost Based Analysis Model   
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03/15/10   2 Interaction Points Why CBAM Decision Making What is CBAM CBAM Steps NASA ECS Case study Questions
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03/15/10   3 Why CBAM Bridge the gap between real and  proposed architecture  Decision making Evaluating the current architecture Win-Win situation Minimize the risk and uncertainty  associated with implementing a given  feature
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03/15/10   4 Evaluating an Architecture Large Systems has large Architecture Mapping Business goals and Technical  decisions Multiple Stakeholders
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03/15/10   5 Decision Making Context Maximize the difference the between the  Benefit derived from the design and the  implementation cost Depends on ATAM model
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03/15/10   6 What is CBAM Provides an assessment of the technical  and economic issues and architectural  decisions Economic model of software takes into  account Costs Benefits Risks Schedule Implications
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03/15/10   7    A quantitative economic approach to  making design decisions                 (As per Software Engineering Institute technical specification)   Utility : The benefit added to the system  through the implementation of an Architecture  strategy is referred to as  utility . Return on investment (ROI) : which is the  ratio of benefit to cost
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03/15/10   8 Context for CBAM
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03/15/10   9
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03/15/10   10 CBAM Steps Collate scenarios . Collate the scenarios elicited during the ATAM  exercise     Prioritize these scenarios based on satisfying the business goals of  the system  Refine scenarios Refine the scenarios by focusing on their  stimulus/response measures elicit the worst, current, desired, and 
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7 - CBAM:Cost Based Analysis Model 03/15/10 1 Interaction...

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