Incremental Model - tugosera/tralalero-tralala GitHub Wiki


Incremental Model

  • Definition: Product is built and delivered in increments (partial systems), each adding functionality.

  • Approach: Build part of the system → Deliver → Build next part → Deliver, etc.

  • Focus: Delivery of complete features step by step.

  • User Feedback: After each increment.

  • Example: First increment = login module, second = dashboard, third = reports.

Pros:

  • Early delivery of working software.

  • Easier testing and debugging.

  • Lower initial delivery time.

Cons:

  • Requires detailed planning.

  • Integration issues may occur.

  • Scope creep risk if not managed.


Iterative Model

  • Definition: The system is developed in iterations, each refining the previous one.

  • Approach: Build → Test → Evaluate → Improve, repeat until final product.

  • Focus: Refinement and improvement.

  • User Feedback: After every iteration.

  • Example: First version = basic functionality, next iterations enhance features and fix issues.

Pros:

  • Continuous improvement.

  • Early risk handling.

  • Allows feedback-driven changes.

Cons:

  • Requires more management.

  • Risk of endless iterations.

  • Not ideal for small projects.


Key Differences

Feature Incremental Iterative
Development Focus Adds new features Improves existing features
Delivery Functional modules Refinements of the whole system
User Feedback After each increment After each iteration
Flexibility Moderate High
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