With the growing popularity of Web services, a general QoS support for Web
services will play an important role for the success of this emerging
technology. Unfortunately, current Web service environments do not offer
comprehensive QoS support. In this paper, we present an approach that does not
only enable the QoS integration in Web services, but also the selection of
appropriate services based on QoS requirements regarding server and network
performance as well as the mapping of QoS requirements onto the underlying QoS
aware network at runtime.