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FIGURE 1-1:
Cloud computing deployment models.
Using a public cloud is like using electricity. You only pay for what you use. And just like electricity, you don’t need to maintain the power plants — the provider does that. You only maintain the devices using the electricity. In this example, you don’t need to maintain and patch the servers running your cloud services, but you do need to maintain the computers and laptops accessing or using the cloud services.
Private cloud
A private cloud typically is dedicated to one organization on its own highly secure, private network located at a company’s on-site data center or at a colocation facility or colo. A colo is a data center facility that rents space for servers to other companies.
CHAPTER1 UnderstandingCloudComputingandtheCurrentThreatLandscape 11
