What is cloud computing all about ?

Moving the location of where the computing is being done

When the first companies stated using computers, the computers were huge and occupied the entire floor of a building.

People accessed the computers remotely using "dumb" terminals, located at their desks. But everything was done on the "mainframe" and an elite group of geeks held the reigns of knowledge and power. Everything flowed through them, and the terminals ran the way they said. If the program did not run the way you liked, that was too bad, you adapted your way of thinking to theirs. Naturally, managers hated "the geeks" and looked for a way to shift the power away from them.

Then came personnel computing and the PC, where each person had the computer on his/her desk and was in effect, their own "head geek". You could modify the PC to make it your own, and use the font you liked, and the set up the spreadsheet your way. but along ith choice came chaos, as administering thousands of PC's and fixing the "booboo's" of the computationally challenged has created a whole new job classification - the help desk

The IT journals are full of the exploits of the poor geek, trying to explain computors to a department head who "just does not get it"



Now you see the geeks striking back. The cost of letting everyone have what now far exceeds the power of that mainframe on his "lappy" is getting harder and harder to justify. Keeping all that running and talking and computing, while cleaning up virus infections from one of "those" e-mails is now a massive cost.

So now you see a movement back to the centralized "cloud", where the application is located on the mainframe and the real horsepower resides there. The desktop slowly reverts back to the "dumb terminal" where all that really runs on your desk is a "browser" which you use to access those programs running on the "cloud"

Where is the "cloud"? Wherever the IT group wants it.

It could be on the companies servers which are located in the basement, or in another city or country, linked to you over the internet. Or it could be on leased servers, in a data warehouse somewhere. Or they could all be virtual, existing only in the virtual space of companies like Amazon, who lease raw computational power that you configure and use on the fly.



That's what makes the "cloud" hard to understand. It's not exactly the same, from one organization to the next. So the easiest generalization is to say it's running your apps remotely "on the cloud"What is cloud computing all about ?
This is a big topic, in summary its a system where Applications run on a server somewhere else in the world in a central location and you can use it for your own work. Best example is office360 by microsoft which allows you to use Office Applications where ever in the world without having it installed on your computer. Saves hard disk space, licensing fees and application issues. Another cloud service is storage, again services like BOX, DropBox or even Live Skydrive.What is cloud computing all about ?
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