What is Cloud Computing?
Cloud has the following characteristics:
It's virtual
Imagine racks of servers, humming along in a data center. Together, these servers become a massive pool of resources. Divide this "pool" into multiple virtual servers, and you create a "cloud."
It's flexible and scalable
Since virtual servers aren't physical, they are super flexible, giving you what you need at the moment. Spin up a server in minutes, and take it down just as easily.
It's open (or closed)
In the open cloud, you can easily move your cloud around—without being locked into one provider or a closed, proprietary technology.
Service models
Cloud has the following characteristics:
It's virtual
Imagine racks of servers, humming along in a data center. Together, these servers become a massive pool of resources. Divide this "pool" into multiple virtual servers, and you create a "cloud."
It's flexible and scalable
Since virtual servers aren't physical, they are super flexible, giving you what you need at the moment. Spin up a server in minutes, and take it down just as easily.
It's open (or closed)
In the open cloud, you can easily move your cloud around—without being locked into one provider or a closed, proprietary technology.
Service models
- IaaS - Infrastructure as a service
- PaaS - Platform as a service
- SaaS - Software as a service
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