Quality of Service through Connector Composition
,Modeling, analysis, and ensuring end-to-end Quality of Service (QoS) 
represent key concerns in large-scale distributed applications.
Deregulation and increased competition in the telecommunications industry mean 
that, increasingly, providers use components and services offered by multiple 
vendors to compose such applications. This highlights the conspicuous absence of 
compositional models of QoS that reflect their underlying architecture of 
component/service composition.
A promising approach to support compositional models of QoS engages connector 
models and augments them to reflect and account for the QoS properties of 
composed systems. In this talk we describe some of the challenges involved, and 
how Reo can support compositional QoS models.