Cloud Computing

Cloud computing is a computing model, where resources such as comput-
ing power, storage, network and software are abstracted and provided as
services on the internet in a remotely accessible fashion. Billing models for
these services are generally similar to the ones adopted for public utilities.
On-demand availability, ease of provisioning, dynamic and virtually infinite
scalability are some of the key attributes of cloud computing.
An infrastructure setup using the cloud computing model is generally re-
ferred to as the “cloud”. The following are the broad categories of services
available on the cloud:
• Infrastructure As A Service (IAAS)
• Platform As A Service (PAAS)
• Software As A Service (SAAS)
This cloud is generally available as a service to anyone on the internet.
However, a variant called “private cloud” is increasingly becoming popular
for private infrastructure that has some of the attributes of the cloud as
mentioned above.

read more...