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David Linthicum

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Top Stories by David Linthicum

While the hype rages around cloud computing, most cloud implementations go the way of the private cloud and avoid the public clouds for now.  Private clouds are exactly what they sound like.  Your own instance of SaaS, PaaS, or IaaS that exists in your own data center, all tucked away, protected and cozy.  You own the hardware, you can hug your server. However, what defines a private cloud these days could also mean systems that are remotely hosted but dedicated to a single enterprise, and, in some cases, provided out of a public cloud data center as a virtual private cloud.  Thus any cloud infrastructure that's dedicated to a single organization is getting the "private cloud" label.  This includes the emerging relabeling of existing enterprise software and hardware solutions, looking to deliver cloud-in-a-box private clouds. If this sounds confusing, it is.  The te... (more)

Ontology and Integration - Managing Application Semantics Using Ontologies and Supporting W3C Standards

Many in the world of application integration have begun to adopt the notion of ontology (or the instances of ontology: ontologies). Ontology is a term borrowed from philosophy that refers to the science of describing the kinds of entities in the world and how they are related. Ontologies are important to application integration solutions because they provide a shared and common understanding of data (and, in some cases, services and processes) that exists within an application integration problem domain, and how to facilitate communication between people and information systems.... (more)

Understanding Coupling in the Context of an SOA

As we bring our SOAs online using Web Services, we all know that SOAP is the standards message transfer protocol. But the interface description language for Web Services (WSDL) isn't specifically for SOAP. It's more generic. A SOAP-centric contract description language for Web Services is needed. Enter the SOAP Service Description Language or SSDL. This framework was just released in mid-February, and is now available for review. Let's take a look. SSDL lets developers publish and share descriptions of the messages and message exchange patterns supported by Web Services. It also a... (more)

Why Services Are Like Craigslist

I caught a review in Fast Company of an interview that Craig Newmark of Craigslist had with ABC's Nightline News. I didn't see the interview myself, but Fast Company did a good job highlighting the more important points, including the fact that Craigslist, which offer free classified ads, is killing the local newspapers. Get this: "...There was the complaint that the site is hurting the newspaper business, stealing away those who would buy classified ads. According to Nightline, this shift has created an annual loss of $50 million in San Francisco alone." Fast Company further say... (more)

SOA 2 Point Oh No!

Here we go again. While the paint is still wet on this new Web 2.0 stuff, many SOA vendors and large analysts firms are calling their market SOA 2.0. It's one of the silliest things I've heard in a long while, and both the analysts and vendors who use this term should be ashamed of themselves. I get Web 2.0 because the Web is well over 10-years-old and we've been successful in using this pervasive technology and now we're moving to newer and more exciting stuff such as AJAX and RSS thus the new version number. However, we've yet to get large-scale traction with SOA so SOA 2.0 is ... (more)