| Cloud as a Service |
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| The Azure platform is an internet-scale cloud services platform hosted in Microsoft datacenters, which provides an operating system and a set of developer services that can be used individually or together. Azure's flexible and interoperable platform can be used to build new applications to run from the cloud or enhance existing applications with cloud-based capabilities. |
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| The cloud computing services are broadly divided into three categories: |
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- Infrastructure as a Service
- Platform as a Service
- Software as a Service
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| Each category has its own value as determined by what you manage and what Azure manages. |
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| Infrastructure-as-a-Service (IaaS) |
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| Infrastructure as a Service model is the on-demand data centers. It is a provision model using which you can outsource the equipment used to support operations, including storage, hardware, servers and networking components. On-demand data centers put virtually unlimited computing power into the hands of businesses irrespective of their size. With IaaS, you get pay-as-you-go data center capacity for adding CPUs, storage, networking, or Web hosting. |
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| Platform-as-a-Service (PaaS) |
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| Platform as a Service (PaaS) is a way to rent hardware, operating systems, storage and network capacity over the Internet. The service delivery model allows the businesses to rent virtualized servers and associated services for running existing applications or developing and testing new ones. Cloud platforms free you to focus on the services you can offer without worrying about or managing the infrastructure needed for those services. |
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| Software-as-a-Service (SaaS) |
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| Software as a Service (SaaS) is a software distribution model in which applications are hosted by a vendor or service provider and made available to customers over a network, typically the Internet. The cloud hosts the applications you use every day for productivity, contact management, payment processing, and more. It can lower expenses associated with software acquisitions in the near term. Longer term, it helps organizations with limited IT resources to deploy and maintain needed software in a timely manner while, at the same time, reducing energy consumption and expense. |
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