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CLOUD COMPUTING (Why Cloud Computing ? (Flexibility – any software…
CLOUD COMPUTING
Computing Models
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Distributed Computing
Consists of multiple computers or processor machines connected through a network, which can be homogeneous or heterogeneous, but run as a single system
Cluster Computing
Consists of a set of the same type of processor machines connected using a dedicated network infrastructure
Grid Computing
A network of computing or processor machines managed with kind of software such as middleware in order to access and use the resources remotely
Why Cloud Computing ?
Flexibility – any software platform, access resources from any machine to internet
Scalability – instant access, easy control via software
Customization – according to the user’s demand in terms of storage, software platforms
Cost – pay as you use model, no upfront cost
Maintenance – is the responsibility of provider in term of software updates, security, backup, etc
Types of Cloud
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Hybrid
Extend the private clouds by connecting to other external cloud vendors to use the available cloud services
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Types of Services
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XAAS
refers to the growing diversity of services available over the Internet via cloud computing as opposed to being provided locally, or on premises
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