Cloud Computing :

 

Let’s, you are an Administrator at a large organization. Your particular responsibilities include making sure that all of your employees have the right hardware and software they need to do their jobs. Buying computers for everyone,  to purchase software or software licenses  to give employees the tools they require. Whenever you have hire a new Employee. you have to buy more software or make sure your current software license allows another user. It’s so stressful that you find it difficult and u spend much your money for this.

Soon, there may be an alternative for this problem is cloud computing. it is new era of Information Technology (IT).  Now it could change the entire computer industry.
In this,  installing a suite of software for each computer,Instead  you did only have to load one application. That application would allow workers to log into a Web-based service which hosts all the programs the user would need for his or her job. Remote machines owned by another company would run everything from e-mail to word processing to complex data analysis programs. this is  called cloud computing,

In a cloud computing system, there’s a significant workload shift. Local computers no longer have to do all the heavy lifting when it comes to running applications. The network of computers that make up the cloud handles them instead. Hardware and software demands on the user’s side decrease. The only thing the user’s computer needs to be able to run is the cloud computing system’s interface software, which can be as simple as a Web browser, and the cloud’s network takes care of the rest.

There’s a good chance you’ve already used some form of cloud computing. If you have an e-mail account with a Web-based e-mail service like Gmail, Hotmail or Yahoo then you’ve had some experience with cloud computing. Instead of running an e-mail program on your computer, you log in to a Web e-mail account remotely. The software and storage for your account doesn’t exist on your computer, it’s on the service’s computer cloud (mail Server).

## Benifites of Cloude Computing ::

Why would anyone want to rely on another computer system to run programs and store data? Here are just a few reasons:

 1. Clients would be able to access their applications and data from anywhere at any time. They could access the cloud computing system using any computer linked to  the Internet. Data wouldn’t be confined to a hard drive on one user’s computer or even a corporation’s internal network.

2. It could bring hardware costs down. Cloud computing systems would reduce the need for advanced hardware on the client side. You wouldn’t need to buy the fastest computer with the most memory, because the cloud system would take care of those needs for you. Instead, you could buy an inexpensive computer terminal.  The terminal could include a monitor, input devices like a keyboard and mouse and just enough processing power to run the middle ware necessary to connect to the cloud system. You wouldn’t need a large hard drive because you’d store all your information on a remote computer.

3. Organizations that rely on computers have to make sure they have the right software in place to achieve goals. Cloud computing systems give these organizations company-wide access to computer applications. The companies don’t have to buy a set of software or software licenses for every employee. Instead, the company could pay a metered fee to a cloud computing company.

4.  Servers and digital storage devices take up space. Some companies rent physical space to store servers and databases because they don’t have it available on site.  Cloud computing gives these companies the option of storing data on someone else’s hardware, removing the need for physical space on the front end.

5. Organizations might save money on IT support. Streamlined hardware would, in theory, have fewer problems than a network of heterogeneous machines and operating systems. If the cloud computing system’s back end is a grid computing system, then the client could take advantage of the entire network’s processing power. Often, scientists and researchers work with calculations so complex that it would take years for individual computers to complete them. On a grid computing system, the client could send the calculation to the cloud for processing. The cloud system would tap into the processing power of all available computers on the back end, significantly speeding up the calculation.

## Cloud Computing Concerns ::

The biggest concerns about cloud computing are security and privacy.
The idea of handing over important data to another company worries some people. Corporate executives might hesitate to take advantage of a cloud computing system  because they can’t keep their company’s information under lock and key.
The counterargument to this position is that the companies offering cloud computing services live and die by their reputations. It benefits these companies to have reliable security measures in place. Otherwise, the service would lose all its clients. It’s in their interest to employ the most advanced techniques to protect their clients’ data.

Privacy is another matter, If a client can log in from any location to access data and applications, it’s possible the client’s privacy could be compromised.
 Cloud computing companies will need to find ways to protect client privacy. One way is to use authentication techniques such as user names and passwords.
 Another is to employ an authorization format, each user can access only the data and applications relevant to his or her job.

## How will cloud computing affect other industries?

There’s a growing concern in the IT industry about how cloud computing could impact the business of computer maintenance and repair. If companies switch to using streamlined computer systems, they’ll have fewer IT needs. Some industry experts believe that the need for IT jobs will migrate to the back end of the cloud computing system.

But Some questions regarding cloud computing are more philosophical, Like Does the user or company subscribing to the cloud computing service own the data? Does the cloud computing system, which provides the actual storage space, own it?
Is it possible for a cloud computing company to deny a client access to that client’s data?

 

In next Post ,To learn more about Cloud Computing Architecture and Cloud Computing Applications,  see the next Post ” Cloud Computing Architecture and  Applications”.