The spiral model is a software development lifecycle model that extends the waterfall approach by recognizing the different cycles of planning, risk analysis, engineering, and evaluation. The spiral model allows for iterative and incremental development, where each cycle produces a prototype or a deliverable that can be evaluated by the customer and the project team. The spiral model also incorporates risk management throughoutthe project, as each cycle involves identifying and resolving potential risks before proceeding to the next cycle. The spiral model is suitable for large, complex, and uncertain projects that require frequent feedback and adaptation. References:
Spiral Model vs. Waterfall Model: Definitions and Differences
Waterfall Methodology: The Ultimate Guide to the Waterfall Model