The document discusses various software development life cycle models, including:
- The waterfall model, which progresses through sequential stages from requirements to maintenance. It allows for predictability but not flexibility.
- Iterative models like prototyping and incremental development, which allow delivering functionality in phases to get early user feedback.
- The V-model which emphasizes verification and validation activities at each stage.
- Agile methods like Scrum and eXtreme Programming which are iterative, incremental and emphasize adaptability over heavy documentation.
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