What differentiates Rapid Application Development (RAD) from the Waterfall model?

Prototyping is a key characteristic that differentiates Rapid Application Development (RAD) from the Waterfall model. In RAD, the focus is on quickly creating prototypes of applications, allowing for rapid feedback and iterative refinement based on user input. This process enables developers to adjust functionality and design in response to user requirements as they emerge during the development cycle.

In contrast, the Waterfall model follows a more linear and sequential approach, where phases such as requirement analysis, design, implementation, and testing happen in a strict order. Once a phase is completed, it is difficult to revisit and make changes based on user feedback without disrupting the overall timeline.

This prototyping approach in RAD allows for a flexible response to change and enhances user satisfaction by ensuring that the end product closely meets their expectations and needs. Thus, the emphasis on prototyping is what clearly sets RAD apart from the traditional Waterfall model.