If performance requirements are not correctly specified and the resultant software is too slow, what is likely to happen?

When performance requirements are not accurately specified, and the software ends up being too slow, it typically leads to it being rejected due to insufficient performance. In the context of software development and requirements engineering, performance is a critical aspect that impacts user satisfaction and overall usability.

If the software does not meet the expected performance standards, users may experience frustration due to delays, lagging, or unresponsiveness. This can undermine the primary purpose of the software and ultimately fail to fulfill the users' needs.

Moreover, stakeholders often have specific performance expectations which are part of the acceptance criteria. When the delivered product does not align with these criteria, it leads to rejection during testing or review phases. This rejection occurs because performance issues are often viewed as fundamental flaws that can significantly affect the overall effectiveness and usability of the application.

In contrast, other outcomes such as acceptance of the software as is or rejection due to lack of excitement do not accurately reflect the core concern of unfulfilled performance expectations. Similarly, while the software not being used might occur, the more immediate and direct consequence of poor performance and lack of specifications is commonly the rejection due to insufficient performance.