A client has a static website that needs to be hosted publicly for their customers to view. After talking with them you determine you should purchase an on-demand server from a cloud platform and install an Operating System and web server to host the HTML files. Which acronym best describes the service you have purchased?
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Answer Description
Infrastructure as a Service (Iaas) is a common alternative to managing a data-center or on-premise servers. With IaaS you can request virtual servers on-demand, but those servers are still your responsibility to manage from the OS level and up.
Wikipedia
Infrastructure as a service (IaaS) is a cloud computing service model by means of which computing resources are supplied by a cloud services provider. The IaaS vendor provides the storage, network, servers, and virtualization (which mostly refers, in this case, to emulating computer hardware). This service enables users to free themselves from maintaining an on-premises data center. The IaaS provider is hosting these resources in either the public cloud (meaning users share the same hardware, storage, and network devices with other users), the private cloud (meaning users do not share these resources), or the hybrid cloud (combination of both).It provides the customer with high-level APIs used to dereference various low-level details of underlying network infrastructure like backup, data partitioning, scaling, security, physical computing resources, etc. A hypervisor, such as Xen, Oracle VirtualBox, Oracle VM, KVM, VMware ESX/ESXi, or Hyper-V runs the virtual machines as guests. Pools of hypervisors within the cloud operational system can support large numbers of virtual machines as well as the ability to scale services up and down according to customers' varying requirements.
Infrastructure_as_a_service - Wikipedia, the free encyclopedia 