In a flattening world, agile companies will succeed because their underlying IT systems can rapidly adapt to changing business priorities. Companies are moving towards Software as a Service (SaaS) and Service Oriented Architecture (SOA) to provide the required flexibility in IT systems, so that IT remains relevant to business. Mainframe applications built decades ago were never meant to support such a changing environment. The focus was on automating specific business processes and processing large volumes of information for the lowest cost possible. Speed of execution and not flexibility was the main criteria. Since Windows Server 2008 provides power and performance equivalent to hundreds of mainframe MIPS, the cost model on which earlier applications were written has been turned on its head.
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