U.S. Navy Advances Modular Open Systems Approach for Enhanced Defense Capabilities
The U.S. Navy is enhancing its Modular Open Systems Approach (MOSA) to improve naval systems engineering and operational responsiveness. Key initiatives include the release of a MOSA guidebook to provide actionable guidance for program offices and a second edition planned for early 2026. The focus is on leveraging commercial technologies and expanding the industrial base to better meet warfighter needs. MOSA aims to streamline procurement and modernization processes while adapting to evolving threats and technological advancements.

The U.S. Navy is investing in Modular Open Systems Approach (MOSA) strategies to enhance systems engineering across naval operations, including air, surface, and subsurface systems. The Navy's MOSA guidebook, first released in January 2025, aims to bridge gaps between high-level policies and practical execution, with a second edition expected in early 2026.
The initiative seeks to improve response times to evolving operational environments by leveraging commercial technologies and diversifying the industrial base. MOSA is viewed as a strategic imperative to support procurement and modernization, enabling the Navy to adapt to new technologies and threats efficiently.




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