Cloud computing - 60 sec to understand

As the main technological trend for the last five years – and probably for the next fifteen – “the Cloud” is gradually revolutionizing our IT habits.
Sometimes this happens without us even noticing: what is Facebook other than a giant cloud where web surfers can publish and comment on their photos, videos and so on?
Cloud computing is a kind of revolution within the Internet revolution.
Unsurprisingly, 60 sec is not very long to explain such a phenomenon.

So, discover Cloud computing in 85 seconds (and not a second more, honestly!)