← Back to Hub

Alternative Development Approaches

Choosing the right methodology depends on project size, budget, and how well requirements are understood at the start.

Waterfall Model

A linear and sequential approach. Each stage must be finished and signed off before the next begins.

  • Best for: Stable, well-defined requirements.
  • Pros: Easy to manage, clear milestones.
  • Cons: Rigid; changes are costly.
RAD (Rapid Application Dev)

An iterative approach focusing on rapid prototyping and user involvement to refine the system.

  • Best for: Time-sensitive projects.
  • Pros: Fast delivery of a working model.
  • Cons: Requires constant user availability.
Agile

A highly flexible approach using short sprints to deliver incremental versions of the software.

  • Best for: Complex, evolving projects.
  • Pros: Embraces change; high user satisfaction.
  • Cons: Hard to predict final cost/time.

Direct Comparison

Feature Waterfall Iterative (RAD/Agile)
Flexibility Rigid / Low Adaptive / High
User Input Start & End only Continuous feedback
Documentation Heavy / Detailed Lean / Focus on code
Risk Discovered late Identified early