It is a Cloud hosting model with which a vCloud Director-based virtual infrastructure is placed at the customer’s disposal, complete with server, router, storage, hardware and software virtualisation. Customers maintain management of the operating system, of the middleware, of the runtime and of the applications; they access the resources offered by the provider through WAN and choose the CPU and storage configuration most suitable to run their applications. In addition to considerable advantages in terms of resource optimisation and rationalisation, end users can count on a high level of service flexibility and scalability, which can be quickly increased or decreased (for example, in terms of number and capacity of server clouds used) to allow them to deal with periods of increase or decrease in demand. In this way firms can have a very high level infrastructure paying a fee established beforehand, and at the same time relieve their IT teams of onerous management tasks, gaining precious time which they can dedicate to more productive activities.
Finally, an essential aspect is the predictability of the economic investment: after having technically evaluated with the customer the infrastructure to be used and activated, an all-inclusive monthly fee is established that is not susceptible to increases.