Which requirement type articulates the performance or quality attributes a solution must meet?

Non-functional requirements are critical to defining the performance and quality attributes that a solution must satisfy. They address how a system should behave and establish criteria for its operation. This includes aspects such as responsiveness, reliability, scalability, security, and usability. Essentially, while functional requirements specify what a system should do — the features and functions — non-functional requirements delineate how those functions should perform, thereby contributing to the overall quality and effectiveness of the solution.

In the context of project development, properly identifying and articulating non-functional requirements ensures that the end product will meet user expectations in terms of its performance and overall quality, ultimately leading to user satisfaction and successful project outcomes.