Tuesday, January 14, 2014

Basics Of Cloud Computing.

Yahh!! Each and every technical people is talking about cloud computing, but you ask them what is actually cloud computing? then 70% of them can't even give some basic definitions. So lets try.

Cloud Computing simply means Internet computing. The internet is commonly visualized as clouds, hence the cloud computing for computation done through internet.

Cloud Computing
Cloud Computing

What is the cloud?

The cloud is where you put all your data, all your files and even your software
so you can access it all from any computer or device, anywhere, anytime. 


  • Cloud computing is cost effective. Here, cost is greatly reduced as initial expense and recurring expenses are much lower than the traditional computing.
  •  Maintenance cost is reduced as a third party maintains everything from running the cloud to storing data.
  • Cloud is characterized by features such as platform, location and device independence, which makes it easily adoptable for all size of business.
  • Another most important characteristic of cloud is scalability, which is achieved through server visualization.

Service Models:

Once a cloud is established, how its cloud computing services are deployed in terms of business model can differ depending on their requirement. The primarily service model being deployed are commonly known as:

Software as a Service:
is a software model. It is provided to client through an online service. Clint  does not have to install or maintain SaaS application. Software is running on a provider’s cloud infrastructure and a user can access it via web browser. With SaaS, vendor makes the required software available to a business on subscription basis, and charges are based on the product usage. SaaS model can save the companies   expenses on buying hardware and software and it removes the maintenance costs.
·     Platform as a Service: 
PaaS is a platform and tools  provided to client to develop applications in a cloud environment.  The provider is responsible for maintenance and control of the underlying cloud infrastructure including network, servers, and operating systems. PaaS services provide a great deal of flexibility allowing companies to build PaaS environments on demand with no capital expenditures.

Infrastructure as a Service:
With IaaS, a company can rent fundamental computing resources for deploying and running applications or storing data. It enables companies to deliver applications more efficiently by removing the complexities involved with managing their own infrastructure. IaaS enables fast deployment of applications, and improves the ability of IT services by instantly adding computing processing power and storage capacity when needed.

Isn’t cloud computing just the internet?

You use the internet to connect your device to the cloud, but the internet is just the connection – the cloud is where your data lives.

Isn’t it possible to lose your data in the cloud?

Your data is actually much safer in the cloud than on your computer. Your computer can be stolen or corrupted quite easily, but cloud companies spend millions on systems and experts to protect your data.

You may also like to Read: Basics Of Cryptography.

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