Cloud computing is reshaping enterprise network architectures and infrastructures. It refers to applications delivered as services over the Internet as well as the hardware and systems software in data centers that provide those services. The services themselves have long been referred to as Software as a Service (SaaS) which had its roots in Software-Oriented Architecture (SOA) concepts that began shaping enterprise network roadmaps in the early 2000s. IaaS (Infrastructure as a Service) and PaaS (Platform as a Service) are other types of cloud computing services that are available to business customers.
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