Incremental Model
In Incremental Model, the Software Development Process is divided into several increments and the same phases are followed in each increment. In simple language, under this model a complex project is developed in many modules or builds.
Software is not delivered all at once. Instead, development is divided into multiple increments, and each increment goes through requirements, design, development, testing, and implementation phases. Every new release improves the previous version.
- Step-by-Step Development: The system is built gradually in small parts.
- Early Working Software: A usable version is delivered early.
- Customer Feedback: Feedback after each increment improves future releases.
- Flexible to Changes: New features can be added in later increments.
- Structured yet Iterative: Combines planning of Waterfall with flexibility of iteration.
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Phases of Incremental Model
1. Requirement Analysis
Requirements for the current increment are gathered and clearly defined.
2. Design & Development
The system design is prepared, and new features are developed.
3. Testing
Each increment is tested to ensure new and existing features work correctly.
4. Implementation
The tested increment is delivered and integrated with previous versions.
