What is the correct relationship between concerns and requirements?

The correct relationship between concerns and requirements is that concerns are key interests of the stakeholders. In the context of TOGAF, concerns represent the various areas that stakeholders are interested in, such as performance, security, and cost. Requirements, on the other hand, are specific conditions or capabilities that a system must meet in order to satisfy stakeholder concerns.

Concerns serve as the foundation for identifying and defining requirements. For example, if a stakeholder has a concern about system performance, this concern will lead to the generation of specific performance-related requirements that the system must fulfill. As such, concerns can be seen as the broader themes or issues that inform and shape the specific requirements necessary to achieve stakeholder satisfaction.

This understanding helps in ensuring that the architecture developed addresses the actual needs and priorities of stakeholders, making it a central aspect of the architectural design process. In this way, acknowledging the distinction between concerns and requirements is crucial for effective communication and successful outcomes in architectural practices.