Safe and Certifiable AI Systems: Concepts, Challenges, and Lessons Learned. - Kajetan Schweighofer; Barbara Brune; Lukas Gruber; Simon Schmid; Alexander Aufreiter; Andreas Gruber; Thomas Doms; Sebastian Eder; Florian Mayer; Xaver-Paul Stadlbauer; Christoph Schwald; Werner Zellinger; et al. (CoRR, 2025)