Comparing Software Development Models

Overview

Each software development model has unique characteristics, making it suitable for different project types. This comparison helps in understanding their strengths, limitations, and best applications.

Comparison Table

Model	Key Features	Best For	Drawbacks
Waterfall	Sequential, phase-based, heavy documentation	Stable, well-defined projects	Inflexible, late testing
Agile (inc. XP)	Iterative, user-focused, frequent delivery	Evolving requirements, user-centered applications	Resource-intensive, scope creep
Spiral	Risk-focused, iterative, adaptable	High-risk, complex projects	Complex, costly
Rapid Application Development (RAD)	User-driven, prototype-based, quick turnaround	Small to medium projects with user feedback emphasis	High resource demands, scalability issues

Suitability Justification

• Waterfall: Preferred when requirements are clear and stable, as the inflexible structure helps maintain strict project scope.
• Agile: Best for projects needing flexibility and ongoing customer feedback. Agile's collaborative approach is effective for evolving requirements.
• Spiral: A good choice for high-risk projects, where early risk detection and mitigation are crucial. Suitable for systems involving new technologies.
• RAD: Fits projects needing rapid prototyping and user feedback, allowing for flexibility and quick iteration. However, it is not suitable for large-scale, highly structured applications.

Note Summary