Friday 13 January 2012

cloud computing introduction


Cloud computing has become a very important topic of IT industry today, all IT firms are taking a step forward in understanding and implementing this concept of cloud computing. This concept is undoubtedly the future of our IT industry and its going to bring about a big change in our lives. The world wide web provides us all the information we need, it connects us to people, helps in carrying out our businesses, provides us with applications to get our work done etc etc.. ,In near future world wide web will no longer be just a source of information and connectivity but It is going to be a main  source of applications and data storage as well. Applications that you run on your pc today would be run on servers . Your computer would just act as an interface  to connect to your desired applications via the internet. With traditional desktop computing, you would run copies of software programs on your own computer. The documents you created were stored on your own pc. Although documents could be accessed from other computers on the network, they couldn’t be accessed by computers outside the network. Thus traditional computing model was PC-centric. In Cloud computing the software programs one use aren’t run from one’s personal computer, but are rather stored on servers accessed via the Internet. If a computer crashes, the software is still available for others to use. Same goes for the documents one create; they’re stored on a collection of servers accessed via the Internet. Anyone with permission can not only access the documents, but can also edit and collaborate on those documents in real time. Unlike traditional computing, this cloud computing model isn’t PC-centric, it’s Document-centric.

The cloud computing architecture is comprised of two significant parts: the front end and the back end. The front end is the side at which the user of the computer or the client himself is able to access  the program or programs that he uses to access the database or the servers that contain all the data.  The back end of the cloud computing architecture is the cloud itself, which is the collection of all related information saved in the servers that the client wishes to have access to.  These two ends of the cloud computing architecture are connected through a network, usually the Internet, because it provides remote access to all the users of the cloud.