Cloud Characteristics - CompTIA A+ 220-1201 - 4.2

Many organizations will build their own private cloud. They have their own data center that they manage themselves. They will purchase their own equipment and their own storage and they will install and maintain everything themselves. Sometimes you'll see this referred to as an internal cloud or a private cloud. All of those resources in their private

cloud are dedicated for their use only. No one else will be using any of the resources that they have acquired and that they maintain in their own internal cloud infrastructure. There's obviously a significant cash outlay to be able to purchase all of this equipment initially and install it into your data center. But once everything's in place, you no

longer have those pay as you go or metered costs associated with a cloud infrastructure. You can use as much of your private cloud as you would like and there's no additional cloud costs associated with that. Some organizations prefer not owning any equipment or maintaining any data center and instead will use a cloud that was created by

others. In this case, it would be an external cloud or what we often refer to as a public cloud. So if you are using public cloud services on Amazon, on Rackspace, on Microsoft, then all of those cloud services would be considered a public cloud. There are many other customers that are deploying their own

cloud-based services. So both you and those other customers are all sharing the same resources to be able to deploy all of those cloud-based technologies. Obviously in these public clouds, one customer is not able to see any data from another customer, but all of you could be using the same storage drives, the same CPUs, and the same network as