  This paper shows that authors have no consistent way to characterize the
scalability of their solutions, and so consider only a limited number of
scaling characteristics. This review aimed at establishing the evidence that
the route for designing and evaluating the scalability of dynamic QoS-aware
service composition mechanisms has been lacking systematic guidance, and has
been informed by a very limited set of criteria. For such, we analyzed 47
papers, from 2004 to 2018.
