Which languages used in cloud computing?

Question

How many language has to used build the cloud storage ?!!

Answer 1

"Cloud computing" is more of an operating-system-level concept than a language concept.

Let's say you want to host an application on Amazon's EC2 cloud computing service, you can develop it in any language you like and on any operating system supported by EC2 (several flavors of Linux, Solaris, and Windows), then install and run it "in the cloud" on one or more virtual machines, much as you would do on a dedicated physical server.