Cloud Federation Tobias Kurze∗, Markus Klemsy, David Bermbachy, Alexander Lenkz, Stefan Taiy and Marcel Kunze∗ ∗Steinbuch Centre for Computing (SCC) Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany Email: fkurze,
[email protected] yInstitute of Applied Informatics and Formal Description Methods (AIFB) Karlsruhe Institute of Technology (KIT), Kaiserstrasse 12, 76131 Karlsruhe, Germany Email: fmarkus.klems, david.bermbach,
[email protected] zFZI Forschungszentrum Informatik Haid-und-Neu-Str. 10-14, 76131 Karlsruhe, Germany Email:
[email protected] Abstract—This paper suggests a definition of the term Cloud the development of new types of applications. Federation, a concept of service aggregation characterized by The paper is structured as follows: Section II provides an interoperability features, which addresses the economic problems of vendor lock-in and provider integration. Furthermore, it overview of the state of the art Cloud Stack and describes approaches challenges like performance and disaster-recovery economic problems related to Cloud Computing. In Section III through methods such as co-location and geographic distribution. we define the term Cloud Federation and explain the concept The concept of Cloud Federation enables further reduction of in detail. Section IV introduces our vision of a reference costs due to partial outsourcing to more cost-efficient regions, architecture for federated Clouds. Finally, we give thought to may satisfy security requirements through techniques like frag- mentation and provides new prospects in terms of legal aspects. open issues in Section V before concluding in Section VI. Based on this concept, we discuss a reference architecture that enables new service models by horizontal and vertical integration.