28 The Method Framework for Engineering System Architectures
responsibilities of architects is to review the requirements for their adequacy with regard to archi-
tecturally significant requirements, especially the quality requirements.
Architectural quality cases are a way for the architects to make their case (e.g., to assessors
and architecture stakeholders) that their architecture adequately supports the meeting of quality-
related requirements. Quality cases consist of the following three components: (1) claims (that the
architecture is good enough — sufficiently supports a specific type of quality requirement); (2)
clear and compelling arguments (e.g., architectural decisions, inventions, trade-offs, assumptions,
and rationales); and (3