The core of SthenosAI.
A defense intelligence platform built for continuous cognition.
A secure, modular architecture that fuses data, enables machine-speed reasoning, and supports controlled action across operational domains.
Intelligence Architecture
Sthenos AI is built on a unified intelligence architecture that connects data, models, and applications into one continuous operational system.
Information flows seamlessly across missions and domains, enabling structured cognition from signal to action. The architecture operates through a structured loop:
Data
Ingests inputs from sensors, ISR systems, video, logs, and tactical platforms.
Sensemaking
AI models contextualize and structure information into operational awareness.
Decision
Machine learning and reasoning engines evaluate scenarios and support structured responses.
Action
Human-controlled applications execute securely through interoperable interfaces.
Continuous retraining and adaptation are embedded into the system, ensuring intelligence evolves with the mission.
— Our Structure
Cluster-Based by Design
To support this vision, EFA Group is organized around four strategic clusters, each grouping complementary capabilities and companies while enabling close collaboration across the ecosystem:
Unmanned & Autonomous Solutions (U&AS)
Focused on unmanned platforms, autonomous systems and services for defense, security and dual-use applications.
Mission Systems, Simulation & Training
Delivering mission systems, interoperability, command & control, AI-enabled solutions, cyber capabilities, and advanced simulation and training environments.
Integrated Services (IS)
Providing integrated defense and dual-use services, aviation and specialized operations, industrial collaboration, and long-term program implementation.
Sensors & Targeting (S&T)
Developing advanced sensors, electronics and targeting technologies that enable precision, awareness and mission-critical performance.
This cluster-based structure allows EFA Group to combine horizontal collaboration
with vertical integration, turning complexity into operational advantage.
— Connecting
An Integrated
Ecosystem.
EFA Group is not a holding company in the traditional sense.
It is an ecosystem, where specialized companies:
- Retain their expertise, identity and agility
- Collaborate across clusters
- Integrate technologies, systems and services into unified solutions
By connecting sensors, platforms, mission systems, AI, cyber and operational services, EFA Group enables networked capabilities across air, land, sea, cyber and space domains.
— International Presence
Global Presence, Trusted Execution
Our Mission
EFA Group operates internationally, with facilities and teams in Greece and a presence across Europe, the United States, the Middle East and Asia.
Our people more than 260 professionals across 13 entities combine deep technical expertise with real-world operational understanding. Together, they deliver solutions that meet the highest standards of performance, security and reliability.
Our Mission
To enable mission-critical, networked capabilities by integrating advanced technologies, systems and services into cohesive, operationally relevant solutions supporting defense, security and aerospace stakeholders worldwide.