VENUS-C: lessons learned of using open source clouds in eScience - Andrea Manieri, Engineering. Abstract : VENUS-C is the first European distributed computing infrastructure to adopt a User-centric approach to Cloud Computing, putting the needs of end-User communities of researchers and small businesses at the forefront of development. A representative User community sample was composed by the 7 scenarios, the 15 pilots and the 5 experiments from eleven different disciplines and SMEs. Chief among the success stories is Green Prefab, a start-up company for architects and civil engineers, which hosts a new innovation cluster stemming from VENUS-C, HUB-Engineering (http://www.hub-e.com/)
. The VENUS-C Architecture Report describes the blueprint for the platform based on which a reference implementation has been done applying a rapid prototyping approach with interactive releases and User validation. The project publicly released open-source components (, namely: - Generic Worker (PMES (Process Management Enactment Services) and programming framework) - COMPSs (PMES and programming framework) - CDMI Proxy - Accounting and billing service - Traffic Redundancy Elimination (TRE) - Interoperability Toolkit As a result, it is clear that the adoption of Cloud and Virtualisation technologies and services is a win-win situation for the scientific community, as it releases benefits for both research institutions, industry.