cloud omputing basic

people are now very eager to learn new technology when we travel in the same road of learning some technology we have come across the term cloud computing.
yes cloud as become the basic key word in current scenario because of its key functionality any where, any time and any thing for minimized cost.
what is cloud computing?
well to define a cloud, so far we couldn't  find a good definition. To precise the over all structure we have a definition and it is...
It is a model for enabling ubiquitous, convenient on- demand network access to a shared pool of resources that can be provided with rapid elasticity released with management effort. eg :- server, storage  
 Remote access to the IT environment of scalable resources made the cloud more demanding and needy.
 cloud has 3 basic infrastructure in it where they are given as individual services to users. 

Infrastructure as a service (IaaS)

Platform as a service (PaaS)

Software as a service (SaaS)

Virtualization Technology

Virtualization is the process of converting a physical IT resource into a virtual IT resource.
Most types of IT resources can be virtualized, including:
  • Servers - A physical server can be abstracted into a virtual server.
  • Storage - A physical storage device can be abstracted into a virtual storage device or a virtual disk.
  • Network - Physical routers and switches can be abstracted into logical network fabrics, such as VLANs.
  • Power - A physical UPS and power distribution units can be abstracted into what are commonly referred to as virtual UPSs.




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