A method and arrangement for enabling delivery of an IT-service to a client, wherein execution of the IT-service requires resources in a cloud architecture. First, a plurality of predefined cloud computing services and respective requirements for resources, are registered. Then, service subscriptions and associated subscription identities, valid in a telecommunications network, are provisioned for the predefined cloud computing services. One of the service subscriptions and associated subscription identity is assigned to an identity module, for enabling delivery of the IT-service to the client by providing an associated predefined cloud computing service when the client uses the identity module. Then, activity of the assigned service subscription is monitored in the network based on the associated subscription identity, and resources are allocated in the cloud architecture according to the assigned service subscription, when it is detected that the assigned service subscription is activated or has been activated.