There is an ever-increasing complexity of the systems we engineer in modern society, which includes facing the convergence of the embedded world and the open world. This complexity creates increasing difficulty with providing assurance for factors including safety, security and performance. In such a context, the AQUAS project investigates the challenges arising from e.g., the inter-dependence of safety, security and performance of systems and aims at efficient solutions for the entire product life-cycle. The project builds on knowledge of partners gained in current or former EU projects and will demonstrate the newly developed methods and techniques for co-engineering across use cases spanning Aerospace, Medicine, Transport and Industrial Control.A special thanks to all the AQUAS consortium people that have worked on the AQUAS proposal on which this paper is based, especially to Charles Robinson (TRT), the proposal coordinator. The AQUAS project is funded from the ECSEL Joint Undertaking under grant agreement n 737475, and from National funding