Whether public, private or hybrid clouds, whether SaaS, IaaS or PaaS: All these cloud computing approaches are differing in particular with respect to the question, whether the processing sites/parties can be determined or not, and whether the user has influence on the geographical, qualitative and infrastructural conditions of the services provided. Therefore, it is difficult to meet all compliance requirements, particularly within the fields of data protection and data security. The decisive factors are transparency, controllability and influenceability of the service provider and his [...]