There is a common misconception that quantitative analysis is ‘too detailed’ to
be performed at the architecture level. However, performance engineering
practitioners argue that next to functional aspects, non-functional (quantitative)
aspects of systems should also be taken into account at all stages of the design of a
system, and not just as an afterthought (Smith 1990). This implies that these aspects
are also relevant for enterprise architectures. In this case,
systems.