Future software systems will be dynamic service oriented systems. Service-Oriented Architecture (SOA) provides an extensible and dynamic architecture to be used, for example, in smart environments. In such an environment, software has to adapt its behaviour dynamically. Thus, there is a need for Verifying and Validating (V & V) the adaptations at run-time. This paper contributes to that by introducing a novel visualization tool to be used with traditional V & V techniques to aid the software analysts in the verification process of dynamic software systems. When Quality of Service (QoS) of dynamic software systems varies due to the changing environment the Interactive Quality Visualization (IQVis) tool detects these changes and provides analysts an easier way of understanding the changed behaviour of the system.