Personally, no, but you might find some useful info here
Do you mean an application that runs on "the cloud" or a cloud hosting environment?
Deploying a business application and supporting data that used to be hosted in the co. data center to a cloud environment.
I think its pretty much the same as securing a hosting solution that is accessed over the internet, however since its using the 'cloud' buzzword, the client co doesn't necessarily get their own dedicated kit, and may actually be sharing the same switches, servers, firewalls etc as other customers. There I can see you have a new security challenge and hence this new cert.
