With all of the hype around cloud computing it is reasonable for decision makers to ask "yes, but what is really good for?". This talk will establish a baseline for discussions around what cloud computing is, what it isn't and how it should be applied to real world applications. Successful deployments over the past year will be shared along with generic examples of applications that can definitely benefit from the cloud paradigm. Finally, a brief overview of Microsoft's cloud offerings with emphasis on the cloud development platform will be provided.