scrum vs kanban model vs waterfal vs spiral
| Aspect | Scrum | Kanban | Waterfall | Spiral |
|---|---|---|---|---|
| Development Approach | Agile | Agile | Sequential | Iterative |
| Process Flow | Iterative | Continuous | Sequential | Iterative |
| Flexibility | High | High | Low | Moderate |
| Requirements Management | Dynamic, evolving | Dynamic | Fixed | Dynamic, evolving |
| Change Management | Embraces change | Flexible | Rigid | Flexible, but formalized |
| Planning | Time-boxed iterations (sprints) | Continuous flow, no iterations | Predefined phases | Iterative cycles |
| Team Roles | Product Owner, Scrum Master, Development | No specific roles, self-organizing team | Limited roles, hierarchical structure | Flexible roles, based on project needs |
| Feedback | Regular feedback loops | Continuous feedback | Limited feedback until later stages | Ongoing feedback throughout the process |
| Risk Management | Identifies and addresses risks iteratively | Addresses risks as they arise | Minimal risk management | Emphasizes risk analysis and mitigation |
| Documentation | Minimal, emphasis on working software | Minimal | Extensive documentation at each phase | Detailed documentation at each iteration |