Managed well, service-oriented architecture (SOA) offers a tremendous opportunity to make positive changes and lay a foundation that will allow IT to become responsive and cost-effective. But SOA is also a potential minefield: hype is raising expectations beyond reality in an environment that is already stressed. In fact, managed poorly, SOA can be an expensive and spectacular failure.
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of new technology on top of older layers of technology. At the time, this seemed like a great idea: leveraging existing investments, avoiding reinvention of the wheel, and not fixing what was not broken. However, the problem now is that changing a system that could potentially consist of anywhere between four and seven layers of mainframe, mini, client server, ERP, N-tier, web, portal, and integration technology is a nightmare. Also, because the foundational layers of legacy solutions still need to be