by August 1, 2010 0 comments



There is considerable interest amongst organizations to move their apps to
the Cloud. But, like any new trend or technology, there are lots of doubts and
questions in everyone’s mind. We’ve attempted to clear those doubts with the
help of this story, in which we’ve given a mix of both theory and practice.
Before you dive into the story, here are a few things that you must know about
Cloud Computing:

There’s more to Cloud Computing than a few Internet based services
Cloud Computing is more than a few applications you can access over the
Internet. It allows you to buy hardware resources online, take an entire
platform for software development, or setup a platform yourself inhouse.

Cloud Computing is a fundamental shift from how your current IT
infrastructure is configured
Most of the time, when people talk about cloud computing, they refer to the
public cloud and some apps you can use from it. But there’s a lot more to cloud
computing than procuring a few online services. It’s a fundamental shift from
the traditional client/server architecture. Instead of having multiple servers,
and even clients, all over the place, they’re all consolidated into fewer,
powerful machines. That’s going back to the mainframe days, you might say, but
back in those days, you didn’t have mobile users carrying laptops, netbooks, and
smartphones, with Internet access. So Cloud Computing is how your IT
infrastructure will change in the near future, to become more flexible, agile,
efficient, cost effective, and accessible from anywhere. This sort of tuning
will require careful planning, and would need to be done gradually in multiple
phases over a period of time.

Cloud computing is about reducing wastage of IT resources & utilizing them
more effectively
Whether it’s the service provider’s cloud, or your own, it’s all about
utilizing your IT infrastructure more effectively. Most cloud applications are
built upon virtualization of hardware resources. While virtualization let’s you
use the hardware more effectively, other tools let you do the allocation and
de-allocation of resources dynamically. Cloud computing to users is what
electricity is to consumers When you plug an electrical or electronic device
into a wall outlet, you expect the device to work. You’re not concerned about
how electricity is generated at the back-end. This in a nutshell, is what cloud
computing is supposed to do to your IT infrastructure. Why should users have to
know the complexities of the IT infrastructure at the back-end? They should be
able to access the services seamlessly without any glitches.

Cloud computing does not equal the Cloud
While the cloud is typically another name for the Internet, cloud computing
is goes much beyond that and defines your IT infrastructure. There are three
models of cloud computing-public, private, and hybrid, and three different ways
of implementing them-SaaS, PaaS, and IaaS. All these have been explained
elsewhere in this story. If you do use the terms Cloud and Cloud Computing
interchangeably, then you have to be careful, to avoid confusing others. In this
story, we’ve covered everything you need to know before you decide to move to
the cloud. We’ve discussed the key trends and cloud computing adoption scenario
amongst Indian enterprises. We’ve explained the different cloud computing models
and modes of their implementation. We’ve talked about how to build your own
private cloud, we’ve discussed a few cloud computing examples. Key Trends in
Cloud Computing adoption amongst enterprises, and finally, we’ve carried a whole
table of the kinds of services available in a public cloud.

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