We started off with Distributed Spaghetti(DS). It was pretty bad. We had 100's of applications talking to each other using multiple protocols and no standard exchange format. Worse yet we really didn't know which apps were talking with which apps. It made maintenance and enhancements a lot of fun. Kind of like which brick do I pull out of this wall to make the whole thing collapse.
Then we moved on to Centralized Spaghetti (CS). The vendors came in with great new wares that promised to straighten out your noodles (don't even go there). Only problem was that there were some secrets on how to straighten your noodles and not everybody bothered to find them out. So we ended up with CS and then blamed the product and vendor.
But the best spaghetti was yet to come. The cool thing is nobody even knows it's spaghetti. Here the apps don't know their apps, they're called services. They still have to talk to each other but now they have a very special language. Turns out this special language is pretty complex. And you guessed it, not everyone bothers to learn it completely. Now we have promised our patrons a very elaborate 7 course meal that they can change to their whims right while it's being cooked. But as it turns out you still need cooks who know how to cook otherwise your back to the old standby, spaghetti. That's right, just about everyone knows how to make spaghetti. Raghu anyone?
So what's my point? Well it is a blog do I really have to have one? Okay here it is. Decent software design really hasn't changed that much in the past few years. Yes the technology is changing but the same old good software design principals have not. Encapsulation, abstraction, reuse blah blah blah have been around for a while now(granularity is a bit different). Please don't say SOA is different because it's about the business. If you have been producing software and architecture with total disregard for the business then you are probably seeking employment. If you were successful with OOP and EAI styles then SOA is not going to be a stretch. If you didn't do so well with those or didn't even attempt them then enjoy your Raghu, SBS style.