1. By Manish Shrotriya CSE300 2014MS Spiral Model of Software development Boehm 1988

2. By Manish Shrotriya CSE300 2014MS

3. By Manish Shrotriya CSE300 2014MS

4. By Manish Shrotriya CSE300 2014MS Spiral loops 1.Identify Objective: Ex: Enhancing system Productivity using Software automation 2.Identify Constraints: Costs, people, culture 3.Alternatives: Possible management change, Tools 4.Risks: Quantify the improvements and assess the possibility of target? 5.Risk resolution: Research, Prototype 6.Resolution research: what can be resolved, up to what level 7.Next Phase planning: Getting into details. 8.Commitment for next Phase: fund, people

5. By Manish Shrotriya CSE300 2014MS Spiral loops 1.What is the starting point Hypothesis of a particular mission: ex. an idea, business expansion Technology change Strategy Change: New leadership, mergers ex: Oracle Sun, Tata JLR 2.When to terminate Alternatives: existing product is sufficient Risk Resolution: Key risks could not be resolved Hypothesis: original hypothesis may not be achivable

6. By Manish Shrotriya CSE300 2014MS Advantages 1.Risk Driven Approach: identifies risks, their severity 2.Early attention on options: Alternatives sometime make lot of sense. 3.Life-cycle evolution and growth: As risk resolution exercise growth plan are developed. 4.Incorporation software quality objectives: Hypothesis quantification helps in quality 5.Budget planning: Based on risks and resolution a budget distribution is more logical