DARPA has initiated the Heterogeneous Quantum Architectures (HARQ) program, aiming to create multi-qubit quantum systems by integrating diverse qubit technologies into unified architectures1. The program comprises two primary workstreams: MOSAIC, focused on optimizing software across various qubit types, and QSB, dedicated to developing high-fidelity quantum interconnects between different hardware platforms. Nineteen teams from academia and industry will collaborate over a 24-month period to establish scalable architectures for next-generation quantum systems and applications. The HARQ program seeks to overcome current limitations in quantum computing by combining the strengths of different qubit technologies, potentially leading to significant advancements in quantum computing capabilities. This matters to practitioners as it could enable the development of more powerful and versatile quantum systems, driving innovation in fields such as cryptography, optimization, and simulation.