Cloud Computing

CLOUD COMPUTING

Hello , here is an interesting and very very useful post . I am sure you would have heard the word cloud computing at least a dozen of times. 

Are you confused about the cloud computing world?

well then this post is for you . 

The first and obvious question you would get is what is cloud computing ?

Everything is going to be cloud in a couple of years - In simple words cloud computing is just performing computations in the cloud .

Now worried about the words computations and cloud?

Relax , Cloud is just a cluster of computers.

Cluster is  a group of computers connected to one another to perform some operation as shown in the figure below.

 Computing can be anything ,

starting from 1+1=2 to estimating the stock market .

starting from storing your pocket money expense sheet to storing the user profile of 1 billion users.

starting from setting up a LAN for you to chat with your friend to setting up a WAN with a 100 million users

Yes you are reading it right .....and the power of computations in cloud goes on and on ......

Want to know more about it?? Carry on reading , you will end up with interesting facts about the cloud computing world .

Next , you need to understand the 3 main categories of services in the cloud .

1 } Software as a service (SaaS)

2 } Platfrom as a service (PaaS)

3 } Infrastructure as a service (IaaS)

 SaaS is a software delivery method that provides access to software and its functions remotely as a Web-based service. SaaS allows organizations to access their business functionality at a cost which is  less than the cost required for licensed applications.

Advantages of SaaS

Since the software is hosted on remotely , there is no need for additional hardware hence the cost reduces .

The organizations need not perform the installation or set up and maintenance . The cloud providers will do everything on behalf of their clients . etc

Examples

Amazon Rackspace .

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 PaaS is a way to rent hardware, operating systems, storage and network capacity over the Internet. This service allows the customer to rent virtualized servers and services for running existing applications or developing and testing new ones.

Advantages of PaaS

This service eliminates the need for purchasing any storage devices and operating systems and other devices required for the network setup .

The client can make use of all the resources of the cloud just by having an internet connection to access the cloud provider's services.

Examples

MS Azure .

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IaaS is a  model in which an organization outsources the equipment used to support operations, including storage, hardware, servers and networking components. The service provider owns the equipment and is responsible for housing, running and maintaining it. The client typically pays on a per-use basis.

Advantages of IaaS

The user is free from owning and maintaining the storage and hardware and servers .

Examples

Google Apps .

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Please feel free to leave your comments or doubts

thank you :)