Cloud computing refers to offering, using and charging for IT services in a way that is dynamically adapted to demand and supplied through a network. The breadth of the services offered in the cloud-computing context encompasses the whole spectrum of information technology – among other things, infrastructure (e.g. processing capacity, storage space), platforms and software. Thanks to the use of cloud services which are only loaded onto the customers’ end devices for further processing where necessary, the customer enjoys reduced costs for investment and for providing, operating and charging for these services. In this regard, cloud services are offered and used solely through technical interfaces and protocols.