|By David Linthicum||
|June 10, 2008 11:00 AM EDT||
However, when you look at mashups, you're not only looking at the mixing and matching of resources found on the Web and / or within the enterprise, but at a true composite application as we've been defining for years in the world of SOA. Thus, mashups are indeed SOA, and SOA does indeed include the concept of mashups. However, there are many in the emerging world of Web 2.0 who would differ on this point of view. We’ll talk more about that later.
What I’m asserting is that, when talking about mashups in the context of architecture, you're typically talking about SOA. In fact, when considering mashups, they are one of the most successful aspects of SOA. The use of mashups is now exploding, and thus they provide the best proof point of SOA. In essence, mashups are the killer application for SOA.
Or, if you're talking about "webby" applications, then perhaps WOA, or Web-Oriented Architecture, is a better term. It really doesn’t matter to me, as long as we're discussing the use of Web-based, and enterprise-based, resources/services that are knitted together to form a solution. Or, more important, provide the ability to re-create the solution (the composite) without a lot of latency, in essence, adding the notion of agility.
Most who build mashups don't think of it as SOA. However, the core notions of SOA / WOA are clearly at work when considering mashups. I view mashups as a mechanism that proves the SOA concept. As time goes on, the concept of mashups will morph into traditional development and become part of the architecture. Yes, this means that mashups won’t be the reneged and disruptive concept they are today, but a well-defined approach to combining many resources together into something that solves a core business problem, and does so quickly.
There are those who do not want the term "mashups" sullied with the term "SOA." The core message is that they view SOA as something that's "enterprisy," and mashups as much more innovative and not really enterprise-related. I can see their point, but the use of mashups is never unrelated to architecture. Indeed, any application is by definition a part of architecture…even enterprise architecture and SOA.
Let me be clear. While mashups are an innovative way of building very cool applications from many available resources, visual and non-visual, they are still composite applications. While I'm seeing mashups that are completely Web hosted, I'm seeing more and more that are a mix of Web and enterprise resources, as well as mashups that are true "enterprise mashups."
While mashups did not emerge from the core concepts of SOA, they do provide some core SOA mechanisms, including the ability to:
- Place volatility into a single domain, thus allowing for changes, thus allowing for agility
- Leverage services, both for information and behavior
- Bind together many back-end systems, making new and innovative uses of those systems
This does not mean that mashups are not innovative; clearly they are. Moreover, it doesn’t mean that mashups are not extensions of the core notion of SOA. Remember, SOA is not an object, it's an architectural pattern.
The reality is that mashups are nothing new, as a concept, and SOA is nothing revolutionary. The core value of mashups is the ability to quickly assemble killer applications using existing resources. We’ve been doing this since the days of object-oriented and component-based programming. However, modern mashups using resources found on the Web, typically free and on-demand, are much more exciting and cool.
SOA is not as exciting and cool these days, although it’s clearly about creating resources and then combining and recombining them into solutions. This provides the ability to adapt to business changes, which is the core benefit of SOA. Thus, with the success of mashups as a core composite application approach, comes the success of SOA. You just can’t deny that fact.
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