The presentation shows how the Open Source is evolving in the cloud-computing environment. It analyzes the InterCloud Exchange model - an open and neutral platform for inter-cloud communication. Based on the open source model the, InterCloud Exchange is able to address the major issues related to inter-cloud communication (Flexibility, Neutrality, Interoperability, SLA management, Exchange, Trade). The presentation also suggests further research to better comprehend the effects of the cloud computing paradigm (both open or closed) on the ICT industry.