It is highly reliable. The public cloud is made up of large number of servers and networks, so the redundancy configuration would ensure that even if a data center or a physical component fails, the cloud service would continue to be available.
Public cloud services are available to its customers, irrespective of the location they are based in. As such public cloud services are more beneficial to enterprises in having services like remote access to IT infrastructure, online collaboration etc.
Public cloud offers greater economies of scale. As the resources are commonly shared and managed by larger number of cloud services, public cloud is far more cost effective than others.
It is a pay-as-you-go type of service. This ensures that there is no wastage of capacity as enterprises employ only the resources they need and that too, whenever they need.
Plenty of model options are available in the case of Public Cloud. Availability of IaaS, SaaS&PaaS options in the public cloud service makes it a preferred form of cloud computing among enterprises.
Simplicity: If you were deploying a highly available infrastructure today, you would purchase servers, install virtualization software on those servers, configure management tools, purchase and install either a SAN or NAS, and finally network the whole bundle together. Each of these layers brings cost, both in terms of out-of-pocket dollars up front and the ongoing management of this complex environment.
With HC, all of these layers and disparate systems are collapsed into one. As the administrator, you install your virtual machines and applications natively on the HC cluster. There is no SAN to buy and manage, there are no servers to buy and manage, and there is no virtualization software to buy and manage. HC handles all of these functions in a single clustered platform.
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