  The aim of this review paper is to bring into light a potential area i.e.,
web services supply chains for research by analyzing the existing state of art
in this. It is observed from the review process that there seems to be much
less work done in the area of web service supply chains as compared to
e-commerce and product oriented service supply chains. The service quality
assurance models, end to end Quality of Service (QoS) models, attempts made to
QoS attributes are also found to be from individual perspectives of
participating entities in a service process rather than a collective
perspective considering individual QoS attributes rather than multiple QoS
attributes. In light of these gaps we highlight the comparison between product
oriented and pure online/ web service supply chains, a need for quality driven
optimization in the web services supply chains, perceived complexities in the
existing work and propose a conceptual model.
