The economic, political and social well-being of European citizens relies on secure information and communication technologies (ICT). Our current ICT security relies in a large part on algorithmic methods that are threatened by constant progress in computing hardware and software, among which quantum computing must be seriously considered. Its potential realization has triggered the development of alternatives to currently-used public key encryption, in particular quantum key distribution (QKD), where security is built within the physical layer and based on the laws of quantum physics. The promise that QKD holds for the future of ICT-dependent societies has been recognized world-wide, including in China and the USA, but the creation of widely-available QKD-based ICT infrastructure and its broad adoption remain an open challenge. A key asset to bridge this gap between QKD technology providers and end users is the establishment and operation of an experimental facility that serves, and helps developing, the quantum communication ecosystem. This is where the OPENQKD projects comes into play. Its main aim is to raise awareness of the maturity of QKD and its seamless integration into existing security solutions and networks for a wide range of use-cases. This is done by working directly with end-users to test and validate end-to-end security for various businesses and industry sectors based on QKD. In particular, the OPENQKD project will set up many testbed sites across Europe (4 large testbeds and 12 smaller demo sites) to bring the technology to as many potential customers as possible. The testbeds will provide the optical fiber infrastructure and locations to house the QKD and other network equipment. In order to demonstrate seamless integration into the security chain, both QKD and classical encryption devices are adapted, according to standardized specifications, to allow a direct hand over of keys. Since the use-case demonstration are core to the project, a selection has been made with more than 30 demonstration planned in a wide range of sectors such as, critical infrastructure protection, data center interconnect, securing of medical data, banking, securing governmental communication and many others. To attract more than just the partners of the consortium, the testbed infrastructure is open also to other interested parties. The project even actively invites additional contribution by opening 2 tender phases where third-parties can bid for financial support in order to work with the project to implement new use-cases or demonstrate new technology. As a pilot project for the much larger vision of deploying a Pan-European quantum communication infrastructure (EuroQCI) within the next decade, OPENQKD tries to evaluate long-distance QKD, either in the form of trusted nodes chains or with an additional satellite QKD component. For the ambitious EuroQCI, it is imperative to have a European quantum eco-system and a well-trained work force in place. OPENQKD supports this growth of European innovations by investing in the manufacturing of next generation QKD systems. Finally, the project will also assist the certification activities for QKD systems to allow them to enter the cyber security market and take-up as fully trustworthy products.