Active from June 2020 to August 2024, the DFG-funded project included experts from history, education, computer science, and media studies in Germany, the USA, and the UK. Survivors such as Pinchas Gutter, Kurt S. Maier, Agnes Kaposi, and Leon Weintraub contributed testimonies housed in institutions like the USC Shoah Foundation. The project explored digital technologies for preserving testimonies, best practices for engaging 3D testimonies, and audience interactions. Interactive digital testimony simulates conversations with pre-recorded responses, evolving from “new” media as technology lagged behind expectations. Despite efforts to standardize terminology, popular discourse used “hologram,” influenced by familiar media concepts. The preferred term “interactive digital testimony” highlights the medium’s interactive nature, setting realistic expectations. The volume, divided into four sections, explores digital testimonies’ design, educational use in schools, museum studies, and survivors’ perspectives, emphasizing the importance of preserving their stories for future generations.