What does the spiral model of software development emphasize?

The spiral model of software development places a significant emphasis on risk analysis as a fundamental part of the development process. This model combines elements of both design and prototyping-in-stages, facilitating iterative development with a focus on improving software quality and reducing risk.

In the spiral model, each iteration or ‘spiral’ consists of four phases: planning, risk analysis, engineering, and evaluation. During the risk analysis phase, potential risks associated with the project are identified, assessed, and managed. This ongoing evaluation allows for adjustments and refinements throughout the project lifecycle, making it possible to address issues early and reduce the likelihood of project failure.

Risk analysis is crucial because it helps teams anticipate and mitigate technical, project, and market risks, ensuring that decisions made during the project are informed by a comprehensive understanding of potential obstacles and challenges. Hence, the spiral model uniquely positions itself to produce a more resilient and adaptable software product.