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The development of web-based collaborative platforms, BIM, and transactional e-marketplaces has been changing the way companies in the AEC sector work. However, due to interoperability issues, the main problems of distributed data and information management across AEC companies and projects are yet to be overcome. This paper presents the Cloud-Marketplace concept, which expands on earlier developments combining BIM, SOA, Cloud Computing, and e-marketplaces in order to create interoperable communities of e-platforms. The Vortaway case study is described to demonstrate the validation of the concept in simple AEC e-procurement processes.