From the course: Software Development Life Cycle (SDLC)
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Spiral model
- [Narrator] The Spiral development model was presented by Barry Boehm in his research paper in 1986. It was one of the oldest software development models that proposed an iterative development approach to building software. The development approach was a mix of Waterfall and Iterative development models. The theme of this approach was that building software iteratively leads to identification and easier management of risks. If we were to visualize this model on a straight line, it is essentially a series of Waterfalls. Each Waterfall contains four phases: Planning, Risk Analysis, Engineering and Evaluation. So each Waterfall consists of four phases. When you start an iteration, you build on top of the output of the previous iteration. One key thing to note here is that each iteration is different from the previous iteration because, as you build a system, you get better understanding of the requirements and continue to…
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