What are the primary differences between public and private cloud computing? Is there a different recommendation you would make, and if so, why?

Please explain the main differences between public cloud computing and private cloud computing. Is there anything else you may suggest instead, and if so, what are the benefits?

Compared to each other, how do the benefits of cloud computing measure up? There are a number of risks and problems associated with cloud computing. If cloud computing provides advantages, does one think it outweighs the drawbacks? Do you have to believe it? If you found yourself in the following scenario, what would you do?