What are the limitations of the RAD system implementation model?

1 User involvement

One of the key features of RAD is the high level of user involvement throughout the development process. Users are expected to provide constant feedback and suggestions for improving the prototypes. While this can enhance user satisfaction and acceptance, it can also create some challenges. For example, users may have unrealistic expectations, conflicting requirements, or changing needs that can delay or complicate the project. Users may also lack the technical expertise or the time to participate effectively in the RAD process. Therefore, managing user involvement requires clear communication, negotiation, and commitment from both sides.

2 Team skills

Another factor that influences the success of RAD is the skills and experience of the development team. RAD requires a multidisciplinary team that can work collaboratively and creatively to produce functional prototypes in a short time. The team members need to have strong technical, analytical, and problem-solving skills, as well as the ability to adapt to changing requirements and feedback. They also need to have good interpersonal and communication skills to interact with users and stakeholders. Finding and retaining such a team can be difficult and expensive, especially in a competitive market.

4 Quality assurance

A fourth drawback of RAD is that it may compromise the quality assurance of the software product. Quality assurance refers to the process of verifying and validating that the software meets the specifications, standards, and expectations of the users and stakeholders. RAD relies heavily on prototyping and testing as the main methods of quality assurance. However, these methods may not be enough to ensure the reliability, performance, or maintainability of the software. Prototypes may not reflect the final design or functionality of the software, and testing may not cover all the possible scenarios or errors. Moreover, RAD may neglect some aspects of quality assurance, such as documentation, reviews, audits, or inspections, that can help identify and prevent defects or issues.