The IMT CubeSat 3U Platform meets a wide range of mission typologies: Science, Earth Observation, Technology Demonstration. Thanks to electronics miniaturization and MEMS components, currently a nanosatellite might carry out missions that, Spacecraft miniaturization involves size, mass, cost and development schedule. Currently, a new mission can be fully developed in two years’ time, with low budget requirements. Thanks to the IMT know how (over 20 years in the space activity) the mechanical and electrical architecture can support a very wide range of LEO orbit altitudes and inclinations. Redundant Architecture and Radiation Mitigation by Design can increase the Satellite Lifetime up to 3 years.