Chapter 35. Spiral Lifecycle Model

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The Spiral Lifecycle Model is a sophisticated lifecycle model that focuses on early identification and reduction of project risks. A spiral project starts on a small scale, explores risks, makes a plan to handle the risks, and then decides whether to take the next step of the project—to do the next iteration of the spiral. It derives its rapid-development benefit not from an increase in project speed, but from continuously reducing the project's risk level—which has an effect on the time required to deliver it. Success at using the Spiral Lifecycle Model depends on conscientious, attentive, and knowledgeable management. ...

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