Web service best
practices, for example, advocate the utilization of document-style messages to reduce the tightly
coupled architectural effect and preserve the statelessness of the message exchange paradigm.
Furthermore, SOAP headers can be used by consumers to insert their identification and credential
data to preserve state and identity information.
DISTRIBUTED SERVICE-ORIENTED TECHNOLOGICAL ASSETS. Another important enabling aspect
of a loosely coupled logical architecture is the distribution method employed to establish a serviceoriented
technological environment. By ???distribution method??? is meant structural grouping of
deployed assets and the policies applied during asset integration. Packaged technological solutions
can be arranged in two ways. One is to define distributed tiers, which typically group technological
assets based on some contextual or technical criteria that has been chosen. The other is to allow
autonomous entities to operate independently without any applied particular structure. The former
method is obviously suitable for a large environment where it is required to deploy numerous
service-oriented technological assets. The autonomous distribution model, however, is typically
employed in organically grown business or technological landscapes or in small-scale deployed
environments.
The tiered approach clearly segments the deployed environment into a more structured
technological landscape, one in which associated assets collaborate to provide a solution.
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