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Applying UML and Patterns: An Introduction to Object-Oriented Analysis and Design and the Unified Process, Second Edition by Craig Larman

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2.1. The Most Important UP Idea: Iterative Development

The UP promotes several best practices, but one stands above the others: iterative development. In this approach, development is organized into a series of short, fixed-length (for example, four week) mini-projects called iterations; the outcome of each is a tested, integrated, and executable system. Each iteration includes its own requirements analysis, design, implementation, and testing activities.

The iterative lifecycle is based on the successive enlargement and refinement of a system through multiple iterations, with cyclic feedback and adaptation as core drivers to converge upon a suitable system. The system grows incrementally over time, iteration by iteration, and thus this approach ...

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