As quantum computing technology advances rapidly, changes are expected in the security of currently widely used cryptographic systems. Consequently, the introduction of Post-Quantum Cryptography (PQC) is emerging as a new challenge for long-term operational vehicles, robots, industrial equipment, and defense systems, as it enables preparation for future security threats while maintaining existing software structures. Quantum technology company Terra Quantum and software-defined vehicle and intelligent machine software company Apex.AI announced that they have implemented a secure communication environment between robot software and the cloud by applying post-quantum cryptography standardized by the National Institute of Standards and Technology (NIST). The existing system remains the same… only post-quantum cryptography is applied Through this collaboration, the two companies verified that software-defined vehicles, connected robots, and defense systems can apply quantum-resistant security without altering existing communication methods or distributed software architectures. The joint solution combines Terra Quantum's post-quantum cryptography technology with Apex.AI's Apex.OS. Based on NIST standard post-quantum cryptography algorithms, it supports secure communication between the edge and the cloud and is designed to maintain existing applications and communication workflows. The two companies explained that this approach is characterized by its ability to implement quantum-resistant security without operational interruption while protecting a company's existing software investments. This means that the security level of long-term connected systems can be enhanced by simply replacing vulnerable cryptographic technologies, without the need for a separate, large-scale system redesign. The need for the introduction of post-quantum cryptography is also growing. Concerns have been raised that currently used public-key-based cryptographic algorithms could be decrypted once quantum computers with sufficient performance capabilities emerge. Consequently, there is an increasing demand to transition security systems starting now for long-term operational systems, such as software-defined vehicles (SDVs), autonomous driving systems, industrial robots, manufacturing equipment, aerospace, and defense. This solution is designed for application across various