Cloud computing, Is it a cloud? Not Really. Cloud
Computing is a combination of two self-explorable terms “Cloud” &
“Computing”. Cloud means
“Internet” and Computing means “Services and functions” that can be performed
through cloud i.e. “Through Internet”.
Above all, Cloud Computing is a technology that
enables users to store, access and manipulate data and services remotely. It
means, through the use of internet all these services related to data storage,
manipulation, retrieval can be done without having any high-end computing
configuration at user’s end.
The cloud service is provided by external
agents/companies called as cloud service agents which are the companies who
manage users data and provides services. These cloud companies have a specific
setup that is capable of handling and providing these services of any scale and
type to multiple users using the concept of sharing.
For example :
1) If a user wants to store 10TB of data, but the
configuration available to him personally is not that high. So, he can store that
10TB of data on the cloud through cloud computing technology. He needs to rent up
that much amount of space from the service provider and then the data can be stored
securely on a remote location. Google Drive, DropBox and One Drive are some
2) Similarly, If a user wants to very high-end games or want
to use high-end designing software but does not have such a high-end computer
system, he can still do this through the concept of cloud computing. Therefore, Any
high-end physical setup is not required by the user as he can avail the
configuration of the cloud service provider and on that configuration, he can either
play a game or use the software. Online multiplayer gaming is an example of
Cloud Computing: Why So
Cloud Computing technology enables its users to
take services and access the applications, data, files etc. from any location in
the world, remotely using the internet, and this is one of the best reason to
support its popularity. Other reasons for its popularity are:
No physical high-end setup is not required
by the user.
Very reasonable cost for availing cloud
Different online services such as online
software, games etc. can be availed.
Highly scalable in terms of services
offered. Based on the requirement and need of the user, storage and data
processing services can be availed without any
No complex architecture for the users.
They need not worry about data stored over the cloud for its security
Multiple copies of data are stored on the
cloud by the cloud service provider and hence there is almost no chance
of data loss.
Cloud Computing technology is very
efficient and reliable too, in terms of performance and
Cloud Computing: The Service
Based on the requirement, usage and need, a type
of model can be chosen up by the companies or individuals who want to use cloud
services. There exist three different types of cloud computing service models
The SaaS Model.
The PaaS Model.
The Iaas Model.
Model: Saas stands as “Software as a Service”. In this type of cloud
service model, the users are provided with the pre-installed hardware
configuration along with the operating system and network configuration too. The
choice of various software and applications are installed as per the need and
demand of users. These software are licensed based and user needs to pay fees
for them. You get what you paid for. For
example:Microsoft Office and Google
Model: PaaS stands as “Platform as a Service”. PaaS model is slightly
different from the SaaS model as software and applications can be developed by
the users if they opt for the PaaS model by using pre-specified hardware and
configuration along with operating system and network configuration. For example: Force.com and
Model: IaaS stands as “Infrastructure as a Service”. IaaS is very
different from other two cloud service models i.e. PaaS & SaaS. In the IaaS
model, an infrastructure containing the hardware configuration and network
resources is provided to the user/company. On that hardware setup, the user can
develop or run any type of software and applications. Also, any operating system
as per the need can be installed too. For
example:Windows Azure and Amazon EC2.
Cloud Computing: The
Clouds are Virtualized.
Clouds are vast resource pools with on demand resource allocation. ---Jan Pritzker
Likewise, Cloud computing is no doubt a technology
to look in future. Moreover, With each passing day, we are getting dependent on
these kinds of technologies. They owe us a lot and without using these
technologies, one cannot image spending a day in their life. They are directly
or indirectly related to our lives. An example can be Google Drive which is used
by millions of people worldwide every day.