Objectives: *The scientific challenges for IoT and M2M protocols in space are linked to the unique environmental conditions of space, the need to optimize the management of limited resources, and the reliability and security of space communications. * Researchers and engineers are actively working on these challenges to enable the effective use of these technologies in space exploration and satellite management. Architecture: * NIMPH M2M Payload: An essential component of the NIMPH satellite, its main purpose is to manage Machine-to-Machine (M2M) communications between Internet of Things (IoT) devices and various IoT systems via the NIMPH satellite. * Generic gateway, IoT gateway: a device designed to act as an intermediary between IoT devices and the NIMPH M2M payload. It is modular to adapt to different ground protocols, and enables IoT devices to communicate seamlessly with NIMPH. * Ground IoT systems: technological infrastructure that collects, processes and manages data generated by connected objects, ensuring their communication with other systems and applications. * Each IoT device may or may not be permanently connected to a gateway for data transfer to satellites (M2M PUS conversion).