*Spiral Model:
characteristics | strengths | weaknesses | applicability |
*A hybrid model that support process iteration. *Represented as spiral, each loop in the spiral representing a process phase. *Risk is explicitly taken into consideration. | *Risk reduction mechanisms are in place. *Supports iteration and reflects real-world practices. *Systematic approach. | *Hard to estimate time & budget at earlier stage. *Need specific expertise in risk evaluation and reduction for analysis. *Applicable only to large systems because it involve high costs in implementation. | *Internal development of large systems. *For smaller projects, the concept of agile software development is becoming a viable alternative. *Development of space exploration. |
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