Provisioning refers to on-boarding new customer into the application. In a completed shared environment (S/W & h/W shared), provisioning refers to virtually enrolling a customer and provisioning a logical system to the customer. In Multi Instance scenario, provisioning refers to rolling out a new physical or virtual instance for each customers in your system.
Cello provisioning system logically provision the system for the customer and not physical/virtual provisioning. If you would like physical provisioning then a custom code can be added specific to your target cloud environment.