When reviewing different cloud models and vendors the security team at your employer suggests the company opt for a private cloud vendor. They state that because public cloud vendors place multiple customers data and computing resources on the same physical infrastructure there is a higher security risk. What term is the security team referencing?
The security team is referencing Resource Pooling. Cloud vendors use resource pooling to maximize efficiency and minimize the cost of their infrastructure. Instead of buying lots of small servers and giving customers access, they create pools of infrastructure using large servers. Using virtualization the large servers are divided up into smaller chunks and assigned to customers based on their computing requirements. This means it is likely that in a public cloud you have your own virtual resources, but those virtual resources are sharing the same physical resources as other customers of the cloud vendor.
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What is Resource Pooling in cloud computing?
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How does virtualization contribute to Resource Pooling?
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What security risks are associated with public cloud vendors due to Resource Pooling?