What is Spiral Model?
Spiral Model is a software development life cycle model that is highly used for risk-driven models. Based on the risk patterns of a given project, the spiral model helps developers increase the efficiency of the model as most risk already handled. It consist of number of loops which form a spiral shape, where each loop is called phase of software development cycle.
Phases of Spiral Model
There are mainly four phases of Spiral Model:
- Planning
- Risk Analysis
- Engineering
- Evaluation
Difference between Spiral model and Incremental model
The Spiral Model and Incremental Model both are software development life cycle models. The Spiral Model is a risk-driven software development model that handles risks early and can manage large projects but is expensive and requires a large team. On the other hand, the Incremental Model develops the product in smaller, manageable modules with easier changes, lower costs, and frequent testing after each iteration, suitable for smaller projects with smaller teams.
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