What approach allows users to be involved every step of the way in system development?

The approach that facilitates user involvement at every stage of system development is known as Rapid Application Development (RAD). This methodology emphasizes the active participation of users throughout the entire process, which helps ensure that the final product aligns closely with their needs and requirements.

RAD is characterized by its focus on creating prototypes, allowing users to provide feedback on early versions of the system. This iterative process significantly enhances user engagement, as stakeholders have the opportunity to interact with the system frequently and influence its development, leading to a product that is more user-centric and better suited to their expectations.

In contrast, other approaches such as the Waterfall method follow a linear, sequential design process where user involvement is typically limited to the requirements gathering phase and may not extend through later stages. Iterative development does promote user feedback but may not guarantee continuous involvement like RAD does. Traditional project management often adheres to predefined stages and timelines, which can also restrict user input throughout the development lifecycle. Thus, RAD is particularly effective for projects requiring high levels of user collaboration and adaptability to changing requirements.