2011 was a whirlwind year. And with the explosion of social media outlets like Twitter, it’s been exponentially easier for us to keep up with what’s been going on in the world. With everything from the Occupy Movement, to Osama bin Laden’s capture, to the passing of Apple’s leader, Steve Jobs, we’ve been able to stay informed and communicate with each other, down to the second.
Cloud computing represents a shift from mainframe to client–server environments to a delivery model for IT services based on the Internet.
Shared resources, software and information are provided to computers and other devices on-demand, providing businesses the benefits of anywhere, anytime access to data, improved reliability, and software that is up to date with less of a potential of malware (relative to laptop storage).
Source : http://wikibon.org