Under this PCP, R&D services will be procured from companies to develop solutions for the set-up of the HNSciCloud Hybrid Cloud Platform, taking into account the performance, security and management aspects of a hybrid cloud infrastructure, including technical standards, interoperability, portability, as well as building trust and confidence in cloud computing services. The innovative IaaS–level services will need to be integrated with a range of resources operated by public organisations and publicly funded e-infrastructures to form a hybrid cloud solution. The overall challenge of building the Hybrid Cloud Platform is based on 3 sub-challenges, taking into account all use cases (see Tender Document 2: Functional Specification).