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Plan-driven vs agile incremental

publish date: 2026/05/29 08:22:39.743475 UTC

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Incremental development can be used in both plan-driven and agile processes.

Which statement correctly distinguishes these two uses?

In agile incremental development, all increments are fixed at the start; in plan-driven, they are discovered later.

Only agile processes can use incremental development.

Both approaches require all increments to be defined only at the end.

In plan-driven incremental development, increments are identified in advance; in agile, later increments depend on progress and customer priorities.

In plan-driven incremental development, increments are identified in advance; in agile, later increments depend on progress and customer priorities.

Plan-driven approaches plan increments up front; agile approaches leave room to adapt later increments based on feedback and changing priorities.

Software Engineering, Ian Sommerville, 9th edition