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David Linthicum

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Top Stories by David Linthicum

It’s what you don’t see about the emerging Web that has everyone excited these days. Namely, it’s the powerful application programming interfaces, or APIs. APIs are nothing new and have been traditionally cryptic and difficult to use. However, the advent of Web services along with the notion of mashups has changed the way we consider and leverage APIs going forward. What changed? In short, the emergence of API consumers, including service-oriented architecture (SOA), browsers that support rich client features such as AJAX, and the notion and popularity of mashups. SOA is having an impact since architectures are moving to both consume and produce services, and these services are able to extend well beyond the firewalls using the appropriate platform services. Thus, partners and customers are able to take advantage of both systems behavior and data no... (more)

Real-World AJAX Book Preview: Base Services

This content is reprinted from Real-World AJAX: Secrets of the Masters published by SYS-CON Books. To order the entire book now along with companion DVDs for the special pre-order price, click here for more information. Aimed at everyone from enterprise developers to self-taught scripters, Real-World AJAX: Secrets of the Masters is the perfect book for anyone who wants to start developing AJAX applications. Base Services At the lowest level you have base services, including legacy services, new services, and data services. Legacy services, such as existing mainframe or ERP system... (more)

The Five Basic Characteristics of SOA

The Gartner Group just listed "9 ways to measure SOA success.” Not to take anything away from Gartner, but theirs is a pretty basic list, if you ask me.  Indeed, these nine measurements are really about any successful architecture, using SOA approaches or not, which is fine. However, I have a few of my own that are more specific to SOA. Here are Gartner's nine: 1. Improved efficiency, particularly with respect to business processes execution. 2. Lower process administrative costs. 3. Higher visibility on existing/running business processes. 4. Reduced number of manual, paper-base... (more)

WS-BPEL 2.0: Not Backward Compatible?

Let's face it, WS-BPEL 1.1 was not a great standard, and left so much out that many end users and vendors found it useless. In response, the vendors put a ton of proprietary extensions in their BPEL 1.1-based products, thus diluting its value to the point of "Why bother?" This was a dirty little secret in the world of SOA. Considering that BPEL 2.0 is on the horizon, I think it's time we began to talk about what's really there, how you can fix it, and what you need to do to get from point A to point B. What's most frustrating about the issues here is that orchestration is indeed ... (more)

How Much Will Your SOA Cost?

I'm consulting now...at the project and strategy levels...and finding that a lot of real work needs to be done to get SOAs up and running. For most organizations, the first step of their SOA project is to figure out how much this SOA will cost. So you can budget appropriately and get the funding. It's a good first step, but most organizations that want to build an SOA don't have a clue about how to approach the cost estimate. In many cases, they grossly underestimate the cost of their SOA, hoping their bosses and accountants won't notice later. In other words, go in low to get the... (more)