This deliverable constitutes the SPARTA roadmap. It describes the SPARTA roadmap's mission statement of strengthening EU's digital autonomy via cybersecurity. To this end, a first step towards a prioritization of the existing program, transversal, and emerging cybersecurity challenges is provided with respect to their impact on digital sovereignty. The document outlines an open-source strategy, covering software as well as hardware, endorsed by SPARTA towards its mission. We also describe implications of the COVID-19 pandemic on cybersecurity and suggests recommendations to address them. This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 830892