W3C: WS-Addressing is Good to Go


Another brick in the wall of Web services standards fell into place this
week.


The World Wide Web Consortium (W3C) ratified Web Services Addressing 1.0 as
a standard, removing another stumbling block on the road to interoperability
among distributed computing systems.


WS-Addressing introduces a way to specify the destination address, reply
messages and faults in SOAP messages, according to a W3C
statement.


Specifically, WS-Addressing promotes asynchronous message exchanges, and
allows more than two services to interact. These are both functions that
enable application-to-application communication, a hallmark of Web services.


WS-Addressing uses end-point reference markers, which work like cookies and
enable single sign-on execution.


The spec was written by IBM, Microsoft, BEA Systems and a number of other
vendors with a vested interest in making Web services work.


Andrew Layman, director of connected systems integration at Microsoft, said
WS-Addressing is important because WS-Trust, WS-ReliableMessaging, and WS-Coordination need it to provide reliable Web
services that interoperate across platforms.


Layman said in a statement that Microsoft will add WS-Addressing in future
Web services-enabled products, including the Windows Communication
Foundation 1.0.


Many analysts believe that Web services will be a
multi-billion-dollar market for years to come, thanks to the demand for
self-managing networks that can execute business transactions without human
intervention.


Many analysts also realize that companies are loathe to craft
service-oriented architectures (SOA) &nbsp to support these
models.


Companies won’t fully embrace the model without proof that the Web services
they would like to exchange will be supported by most or all of the
architectures of their end-user customers, partners and suppliers.


This is why it is so important for specs like WS-Addressing 1.0, which
provides a blueprint to teach developers how to address objects in Web
services applications, to be passed as standards.


W3C also recently received
WS-Policy as a submission for formal approval as a standard after its
developers filled a hole in the spec that made companies reluctant to write
to it.


WS-Policy was introduced in 2002 by IBM, Microsoft, BEA Systems and others
as a means for Web services to express their requirements and policies to
other Web services.

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