The high degree of distribution and heterogeneity in multi-cloud and federated cloud architectures leads to a massive development and management complexity for application providers. The concept of a cloud broker is therefore introduced as a way to outsource this complexity and thus to facilitate the adoption of multi-cloud architectures.

The CrossCloud event series explores the issues around the increasingly relevant field of multi-cloud and federated cloud systems. This edition of the workshop focuses on the architecture of such cloud brokering systems, and more specifically the concept of Broker as a Service (BaaS): How could a cloud broker be provided as an intermediate middleware service to different stakeholders?

The objective of the workshop is to foster a lively discussion about the theory and practice of cloud brokers, including an interactive and hands-on session (cf. design (te)charrette). The desired outcomes are to develop a new collective understanding of the key architectural aspects in this field, to come to a holistic architecture of the cloud broker concept, and hopefully to affect future research agendas. We invite researchers from diverse domains to identify important issues in the form of open research questions, state of the art reviews, standardization efforts, and to propose solutions and experiences including early-stage work.

CrossCloud Brokers will be held in conjunction with the ACM/IFIP/USENIX Middleware conference in Bordeaux, France in December 2014.

Authors of the best (technical) papers will be invited to submit an extended version of their work to a special article collection at the SpringerOpen Journal of Internet Services and Applications (JISA).