3- Public Clouds, Private Clouds, and Collaborative Clouds: We are all aware of the “public cloud”, the Internet, the Information Superhighway, it is what you log on to every morning. If you are at work you log onto a private cloud, which is kind of like Cheers (where everyone knows you name), this might be where you do most of your work. But just like working only inside a firewall is not enough today, public and private clouds are merging. They are merging to such a degreee that the boundaries are not so clear any more.