HARPIA-Defiance represents an advancement in defense technology that integrates AI-driven surveillance, secure communications, and autonomous systems into a unified defense ecosystem. HARPIA-Defense’s ecosystem is built upon nine interconnected pillars that work in perfect synchronization, with the HERMES-Hub serving as the central cybersecurity intelligence center for collecting and analyzing security data, while the HUS-Net provides comprehensive surveillance through drones and ground vehicles. The system’s operational control is managed through COpCon-Face, which serves as the central interface, working alongside Blokes-Com for encrypted blockchain-enabled communications and SA-Con for secure access control. It is protected by AUTOCYBER-Sol, which acts as an automated cyber threat detection and response system, while DYNAMO-Mech optimizes network management, and AIPAY-Ops enables autonomous operations. The QUALIFORCE-Comp ensures all components meet military standards, creating a comprehensive and robust defense system that maintains continuous communication and support between all pillars. The system’s key innovations lie in its «All- in-One solution» approach, which uniquely combines cybersecurity, surveillance, and communications in a single ecosystem. HARPIADefence’s value proposition is multifaceted, offering enhanced situational awareness through continuous high-resolution surveillance, improved cybersecurity through AI and blockchain technologies, and optimized resource management that reduces operational costs. The system’s ability to operate in GPS-denied environments, its blockchain-enabled secure communications, and its self-healing network capabilities set it apart from traditional defense systems. HARPIA-Defense’s modular architecture ensures adaptability to evolving threats while maintaining continuous operational effectiveness, making it a significant advancement for European defense capabilities and allied force coordination.