Title:
Strategies
for the Loose Coupling of Information Services
in an Internet of Services
Abstract: Web
Services have experienced great interest during the last
years as they
are expected to act as enablers of seamless
application-to-application integration
both within company boundaries and on a global
scale. Especially the
automation of cross-organizational, information
intensive business processes
through the loose composition of standardized
services is believed to significantly
reduce costs and increase operational agility.
In this work, wepresent
three different strategies to supporting Web Service
composition across corporate
boundaries: A central service orchestration
architecture, a hybrid orchestration
approach with hub support and finally a fully
decentralized orchestration
solution without any central control entity.
We evaluate and compare
the three strategies on the basis of the eight
criteria functional scope, monitoring
capabilities, fault detection and removal,
simultaneousness of process
instance execution, scalability, security, seamless
interoperability of the coupled
applications as well as end-point complexity. The
analysis shows that the
hybrid approach represents the most promising solution
as it unifies theadvantages
of centralized and decentralized strategies.
Authors: Christoph
Schroth,Till Janner, and Volker Hoyer