The anatomy of a large-scale hypertextual Web search engine
WWW7 Proceedings of the seventh international conference on World Wide Web 7
Digital Capital: Harnessing the Power of Business Webs
Digital Capital: Harnessing the Power of Business Webs
Distributed and Parallel Databases
IEEE Internet Computing
Quality driven web services composition
WWW '03 Proceedings of the 12th international conference on World Wide Web
Composing Web Services: A QoS View
IEEE Internet Computing
Managing Quality of Human-Based eServices
Service-Oriented Computing --- ICSOC 2008 Workshops
A semantic end-to-end QoS model for dynamic service oriented environments
PESOS '09 Proceedings of the 2009 ICSE Workshop on Principles of Engineering Service Oriented Systems
Web services QoS: external SLAs and internal policies or: how do we deliver what we promise?
WISEW'03 Proceedings of the Fourth international conference on Web information systems engineering workshops
Web Services: Concepts, Architectures and Applications
Web Services: Concepts, Architectures and Applications
Using the web as a reuse repository
ICSR'06 Proceedings of the 9th international conference on Reuse of Off-the-Shelf Components
ECSA'07 Proceedings of the First European conference on Software Architecture
The dynamic network notation: harnessing network effects in PaaS-ecosystems
Proceedings of the Fourth Annual Workshop on Simplifying Complex Networks for Practitioners
Connecting your mobile shopping cart to the internet-of-things
DAIS'12 Proceedings of the 12th IFIP WG 6.1 international conference on Distributed Applications and Interoperable Systems
Monitoring SOA-based applications with business provenance
Proceedings of the 28th Annual ACM Symposium on Applied Computing
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In the service-oriented computing paradigm and the Web service architecture, the broker role is a key facilitator to leverage technical capabilities of loose coupling to achieve organizational capabilities of dynamic customer-provider-relationships. In practice, this role has quickly evolved into a variety of intermediary concepts that refine and extend the basic functionality of service brokerage with respect to various forms of added value like platform or market mechanisms. While this has initially led to a rich variety of Web service intermediaries, many of these are now going through a phase of stagnation or even decline in customer acceptance. In this paper we present a comparative study on insufficient service quality that is arguably one of the key reasons for this phenomenon. In search of a differentiation with respect to quality monitoring and management patterns, we categorize intermediaries into Infomediaries, e-Hubs, e-Markets and Integrators. A mapping of quality factors and control mechanisms to these categories depicts their respective strengths and weaknesses. The results show that Integrators have the highest overall performance, followed by e-Markets, e-Hubs and lastly Infomediaries. A comparative market survey confirms the conceptual findings.