[CAnet - news] SOA demands new way of thinking

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[Some excerpts for eWeek article -- BSA]


http://www.eweek.com/article2/0,1759,1784971,00.asp

The tools available to developers for building and deploying Web services
can easily lead to the wrong kind of success. It's easy for individual
application developers or business units to use new tools and standards to
define a function and expose it in the form of a service; it's harder to
make services talk to one another across unit boundaries, or among partner
organizations, to achieve code reusability now and flexibility in the
future.

An SOA is more than the endpoints of a network of IT resources, said Oracle
Corp.'s Ted Farrell. "In the past year, I would say the biggest influencer
we've seen, hands down, is BPEL-Business Process Execution Language,"
Farrell said. "Having a very simple language that lets you quickly and
declaratively hook these things up and actually start wiring services
together into applications has been enormous."

A possibly related shift, as described by Microsoft Corp.'s Ari Bixhorn, is
a movement away "from using Web services as an internal-only technology to
one that spans organizational and trust boundaries. I think that's where
we're now seeing Web services hitting a tipping point."

What makes Martinez optimistic is the shift he said he sees from customers
thinking about services as an interoperability solution to thinking about
service orientation in broader terms as an "evolvability" aid.
Alexander Krapf, from Codemesh Inc., didn't want to see the group dismiss
too quickly the continued importance of Web services in paving the way to
SOA success. The ideas behind SOA are not really new, Krapf said. "In CORBA,
you could do many of the things that you can do with more modern SOA
approaches, but [CORBA] never took off," he said. "What we're seeing now is
much more widespread adoption, not just on the middleware vendors' side but
also on the application vendors' side."



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