One of the most significant enablers of IT and software automation has been the shift away from fixed infrastructure to flexible infrastructure. Virtualization, process isolation, resource sharing and other forms of flexible infrastructure have been in use for many decades in IT systems. It can be seen in early Unix systems, Java application servers and even in common tools such as Apache and IIS in the form of virtual hosts. If flexible infrastructure has been a part of technology practice for so long, why is it getting so much buzz now? Infrastructure as......

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