In one of the classes last year, we got into a discussion over whether ESB is a true bus or a hub architecture. I thought, "Oh, what does it really matter as long as it works?" But that's just me.
Truth is, the ESB is really more of a interconnected hub structure. It's a hub within any instance of the implementation ... and a kind of channel structure between hubs.
Even one of our true bus architectures -- Ethernet -- is not really a bus anymore, it's a star-hub structure with a high-speed switch fabric at the center.
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The concept of "application" really is morphing, isn't it? The concept of a monolithic application is nearly dead ... and perhaps has been for 10 or more years. But more and more, an "application" is becoming a kind of logical collection of services stitched together.
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I'm in Pallisades, NY right now. Lots of quaint villages. Lots of green and budding spring. Lots of gray overcast skies.
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