The adoption of open standards-based interoperable grid and cloud computing infrastructure is a way to support research in Europe that can be empowered through ubiquitous, trusted, and easy trans-national access to services for data, computation, communication and collaborative work. SIENA is the European Commission-funded project whose roadmap assesses the situation, identifies issues and makes recommendations on the adoption and evolution of grid and cloud standards for e-science and beyond.

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... hese recommendations look to continue the dialogue between public sector officials, industry and Standard Development Organizations over the deployment of cloud based services for the scientific community and public procurement. This paper presents the results of the SIENA roadmap together with its recommendations that are focused on the work of Europe's Distributed Computing Infrastructure initiatives in advancing the standards landscape, especially with regard to the adoption of cloud standards such as OCCI, CDM and OVF.