Satellites are thoroughly tested before they are launched into space. This roadmap considers the technology of the ground-based equipment that is used to test satellites, instruments, subsystems and launch systems. Simulation technology plays an important role in this field. The parties involved in this roadmap include: Celestia-STS (previously SSBV), AirbusDS Nederland, Terma, NLR, ISIS, and Altran Netherlands BV (previously Nspyre).