Abstract
Software systems which are dynamically composed from autonomous Web Services, coordinated by some composition processes referred to as Web Service Based Systems (WSBS). These are essentially distributed in nature and in most cases facilitated through third party service providers. Service-based approaches are widely used to integrate the heterogeneous systems. Web Services allow for the design of highly dynamic systems where services can be discovered and QoS parameters negotiated at run-time. This necessitates monitoring of the provisioning of WSBS at run time. Run-time monitoring in a non-intrusive, cross-layer, composition platform independent, multi-layer and decentralized manner is a real challenge. The objective of this article is to overview the research development in WSBS monitoring and highlighting the existing current research challenges.
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