On Dec 12, 2007, at 1:44 AM, Francis McCabe wrote:
Service Oriented Architecture -- A paradigm and context for composable systems
SOA is an architectural paradigm that is driven by the need to enable multiple participants to interact with each other, offering and consuming services on the scale of the Internet itself. As such it promotes a world in which services can and will be used and reused in ways that perhaps the originators of services do not envisage.
The OASIS SOA Reference Model gives a concise characterization of SOA means,
delete "means"
and how it is different to
s/to/from/
other paradigms for distributed systems; one of the key distinguishing features of SOA is its ability to seamlessly incorporate
s/seamlessly incorporate/work across/
[There is still policy intersection and other bits and pieces of the execution context that need to be resolved for an interaction, so "seamless" may be a bit of an overstatement.]
multiple ownership domains.
The OASIS SOA Reference Architecture takes the work of the Reference Model one stage further: by providing an architectural description of how SOA-based systems may be realized.
There are three main views in the Reference Architecture: the view corresponding to how SOA-based
s/SOA-based/SOA-based systems /
might be used in an effective way; the view corresponding to how SOA-based systems may be constructed; and the view corresponding to the issues raised in owning SOA-based systems.
In this presentation we will outline the major models that are part of these views; and show how they form the basis of a coherent architecture that address many of the key points in systems that span ownership domains: how the roles of participants, resources, policies and agreements can be coherently integrated; how modern technologies can be used to realize such systems;
[Do we really get to "how modern technologies can be used to realize such systems"?]
and how issues such as security, governance and management can addressed effectively.
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