RECS is a modular, scalable microserver platform designed for heterogeneous computing. Heterogeneous computing leverages combines different computing architectures to optimize performance and energy efficiency. RECS offers a modular hardware framework that integrates various microserver architectures, enabling users to configure optimized processing platforms for specific application requirements. The paper discusses the architecture, key hardware platforms, management subsystems, and communication infrastructure of RECS. Furthermore, its integration into the EU-founded projects eProcessor and VEDLIoT is discussed. The monitoring, management capabilities and robust communication infrastructure further enhance the system’s efficiency and flexibility. RECS demonstrates its potential for resource-efficient computing solutions, providing flexibility and
fostering innovation in heterogeneous computing.