A spiral model is a combination of an iterative and sequential linear process models. It allows for continuous enhancements to each incremental release of a prototype. The project repeatedly passes through four phases until the entire software is built.
When to use a Spiral Model
A spiral model is used when a project is long, the risks need to be continuously evaluated, requirements are complicated, the software requires significant changes, and frequent releases are required.
- Fast development
- Larger projects and software are handled strategically
- Proper risk evaluation
- Control of phases in development
- Features are added systematically
- Early production of software
- Customer feedback and changes are implemented faster