Where the Cloud Computing comes from?

“Cloud”!? This word which nowadays is broadly used to describe any technology sounds confusing for few generations human beings who were born in the analogue era. They still consider that the clouds belong to the skies and honestly they are right. Why anyone would used the word “cloud” to describe any technology? Some dictionaries have already posted updates in their databases for the word “cloud” and added the following meaning:

“(often the cloud) Computing a network of remote servers hosted on the Internet and used to store, manage, and process data in place of local servers or personal computers: $… per month gets you 25GB of storage in the cloud | [as modifier] : once you are logged in to your cloud storage space, you can upload files to it and share them with others.”

However, even such definition is not quite precise and does not really describe what is really “cloud” (Cloud Computing) about? In 2006, during the “Search Engine Strategies Conference”, Google’s CEO, Eric Schmidt uses the word “cloud” to describe certain technology environment” and said that:

“What’s interesting is that there is an emergent new model, and you all are here because you are part of that new model. I don’t think people have really understood how big this opportunity really is. It starts with the premise that the data services and architecture should be on servers. We call it cloud computing — they should be in a “cloud” somewhere. And that if you have the right kind of browser or the right kind of access, it doesn’t matter whether you have a PC or a Mac or a mobile phone or a BlackBerry or what have you — or new devices still to be developed — you can get access to the cloud. There are a number of companies that have benefited from that. Obviously, Google, Yahoo!, eBay, Amazon come to mind. The computation and the data and so forth are in the servers.”

What Cloud Computing really is and what do we need to know about Cloud?