Incremental Model

1.       Generates working software quickly and early during the software life cycle. 2.       More flexible – less costly to change scope and requirements. 3.       Easier to test and debug during a smaller iteration. 4.       Easier to manage risk because risky pieces are identified and handled during its iteration. 5.       Each iteration is an easily managed milestone.

1.       Each phase of an iteration is rigid and do not overlap each other. 2.       Problems may arise pertaining to system architecture because not all requirements are gathered up front for the entire software life cycle.