A Cloud Computing deployment requires various steps.
There are various choices an organization/person have to make before using cloud services like what kind of deployment model they will choose Public, Private or hybrid.
They have to choose for the kind of service model they will use that will suit their product like SaaS, IaaS or PaaS.
But, the first step for the deployment of cloud computing is to choose a Cloud Service provider be it Azure, Amazon Web Services and many more.