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Cloud Computing - another Internet revolution ?
There are many end-user benefits:-

Minimum requirement to access a cloud is only an Internet capable device.
Ease of access. As long Internet is available the files can be accessed from anywhere in the world.
As the information is synced on multiple servers, chances of loosing your data in almost 0.
Maintenace and hardware upgrade costs are minimized and only limited to basic computing. Cloud is doing  the tough job.
There are other benefits like security, immediate resource expansions, no longer commitments.

There are some dis-advantages too :-

Availability of Internet to access documents.
Download speeds may differ for large documents.
Internet hackers.
Whenever a document or photo is uploaded on the web, a thread of cloud computing is active. The web-sites then transfer the information to remote servers. This communication is a form of cloud based computing which requires internet.

So how to define cloud computing in one sentence ?
A set of remote servers connected through Internet which can then be accessed across the world is called cloud computing.

Server and cloud

A server is generally a remote computer with enormous capacity to store data and perform calculations in parallel.  

Cloud is a network of interconnected severs and application software required to mange the communication. Application software is an interface between end-users, cloud and servers.
Examples of cloud computing from day to day activities:-

Accessing emails on Internet enabled browsers.
Uploading pictures on websites.
Uploading documents on websites.
Creating, editing and saving documents on web.
File sharing, ftp, torrents.
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