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Daniel M. Berry with material from James E. Tomayko - page 31 / 187

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Spiral Model

Barry Boehm introduced the more realistic spiral model.

Determine objectives, alternatives, constraints

Evaluate alternatives; identify, resolve risks

Risk analysis

Simulations, Models, Benchmarks

Plan next phase

Develop, verify next level product

The waterfall can be considered one 360sweep of the spiral.

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