AIX (AI-eXpress) is a series of technology demonstration small satellites developed by the Italian company Planetek with support of the European Space Agency (ESA). The three satellites (AIX-1p, AIX-1, and AIX-1+) are designed to test various technologies in the areas of edge computing, machine learning, and blockchain for in-orbit data processing on Earth observation satellites. The project is supported by the ESA's InCubed co-funding programme.