The QISS Vienna Conference will take place at the University of Vienna's Faculty of Physics building (adjacent to IQOQI) from April 14th to 17th, 2025. The conference is organised by the Institute for Quantum Optics and Quantum Information (IQOQI), Vienna. This event will serve as the summary conference for the QISS II collaboration. We are planning a discussion-focused format, featuring a few talks presented by young researchers, followed by ample time for questions and discussions.