Tacthys is a holding company created in 2013 and located on the Finistère. Our group includes 3 subsidiaries that work in synergy with each other. Our first subsidiary, Cervval, is our computer engineering expert. It develops complex planning solutions and simulation tools to make Digital Twins. Our second subsidiary, E-medys is our expert in e-health solutions and develops applications and training solutions in Virtual Reality. Finally, Leo viridis is our expert in biotechnology. Its core business is R&D applied to the Oil & Gas and alternative energy sector; it extends its skills to other sectors of activity. It works on two lines of research: industrial biotechnologies and environmental impact studies.