There are three types of cloud available: Public Cloud, Private Cloud and Hybrid Cloud. Public cloud computing, what we hear the most is where Amazon EC2, Microsoft Azure, and Google Apps come to mind. But whether it is the right model depends on the criticality of your application and infrastructure requirements. It may work for some of your computing needs, but if you feel more comfortable to have your computing resources inside your own firewalls, then private cloud computing is the right answer. That’s what enterprises tend towards when they have a large user base and they are concerned about the data, security and latency.
