System Development Methods
Structured approaches for designing and
implementing information systems.
Waterfall Methodology
• Linear, phase-by-phase approach
• Each phase must be completed before moving to
the next
Pros:
• Clear structure
• Easy to manage
Cons:
• Rigid, difficult to make changes
• Testing happens late in the process
Agile Methodology
• Iterative & flexible approach
• Development in small increments (sprints)
Pros:
• Customer involvement & feedback
• Quick adaptation to changes
Cons:
• Requires high collaboration
• Hard to estimate time & cost
Iterative Methodology
• Repeats development cycles, each improving
the system
Pros:
• Early testing and feedback
• Flexibility in requirements
Cons:
• Requires more planning
• Can be resource-intensive
Prototyping
• Creates early versions to refine requirements
Pros:
• Helps identify user needs
• Reduces misunderstandings in requirements
Cons:
• Can be time-consuming
• Users may expect the prototype to be the final
product
Spiral Methodology
• Combines Waterfall & Iterative approaches
with risk management
Pros:
• Good for large, complex projects
• Risk-focused approach
Cons:
• Expensive & requires expertise
• Long development time
DevOps
• Integrates development & operations for
automation & continuous delivery
Pros:
• Faster software releases
• Improved collaboration
Cons:
• Requires cultural & process changes
• Security risks if not managed well
Choosing the Right Method
Consider factors like:
• Project size & complexity
• Customer involvement
• Flexibility needed
• Team expertise & collaboration
Conclusion
• No single method fits all projects.
• Many teams use a hybrid approach combining
multiple methodologies for efficiency!