The Spiral Model is a risk-driven software development process that combines iterative development with systematic aspects of the Waterfall Model. It involves multiple cycles (or “spirals”), each consisting of four key phases:
- Planning: Define objectives, requirements, and constraints for the project.
- Risk Analysis: Identify and mitigate potential risks.
- Development and Testing: Build and evaluate the prototype or product increment.
- Evaluation: Review progress with stakeholders and decide on the next iteration.
Key Features:
- Focuses on risk management.
- Allows for iterative refinement.
- Suitable for large, complex, and high-risk projects.
Advantages:
- Flexibility for changes.
- Early identification of risks.
- Encourages stakeholder involvement.
Disadvantages:
- High cost and time-intensive.
- Requires expertise in risk analysis.
It’s ideal for projects with evolving requirements and significant risks.
