White Papers

Modular Open Systems Approach (MOSA)

September 03, 2021 | BY: David Jedynak, Jason DeChiaro, Lisa Sarazin

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Why Open Standards Like CMOSS and SOSA™ Are the New Normal


What is MOSA?

A Modular Open Systems Approach (MOSA) is not itself a technical standard. Rather, MOSA is an acquisition and design strategy that prioritizes the use of open standards-based technology for, as the Defense Standardization Program states, "designing an affordable and adaptable system."

A mandate for all new defense acquisition programs to be designed and developed using MOSA was actually codified into law (Title 10 U.S.C. 2446a.(b), Sec 805); however, the major push toward MOSA took place in 2019 when the U.S. DoD issued a memorandum with the subject "Modular Open Systems Approaches for our Weapon Systems is a Warfighting Imperative." The memo states that the Secretaries of the Air Force, Army, and Navy have reviewed the open standards that have been developed, demonstrated, and validated in their respective branches for the past several years. Deeming the continued use of such open standards "vital to our success," the memo mandates that MOSA supporting standards should be included in requirements for all weapons systems going forward.

Figure 1 - Open standards enable seamless sharing of information across all machines, platforms, and domains

Figure 1 - Open standards enable seamless sharing of information across all machines,
platforms, and domains

This directive has accelerated the adoption of a variety of MOSA supporting standards, particularly the following, which we'll explore in this white paper:

Download Modular Open Systems Approach (MOSA): Why Open Standards Like CMOSS and SOSA™ Are the New Normal to read about                                                            

  • The MOSA directive and its significance for defense technology
  • Reasons to adopt a MOSA-based architecture
  • MOSA-supporting standards found in today's program requirements

Author’s Biography

David Jedynak

Chief Technical Officer, COTS Solutions

David joined Curtiss-Wright in 2008 and has focused his expertise in network centric systems and COTS solutions. David actively participates in the VICTORY Standards Organization and has presented a number of vehicle electronics architecture papers to GVSETS. Prior to joining Curtiss-Wright, David worked in automotive consumer electronics industry, designing, ruggedizing, and integrating new technologies into vehicles. David has a BS in Electrical Engineering, Certificate in Astronautical Engineering, and Certificate in Project Management from UCLA.

Jason DeChiaro

Author’s Biography

Jason DeChiaro

System Architect

Jason DeChiaro is a System Architect at Curtiss-Wright. He received his Electrical Engineering degree, with distinction, from Worcester Polytechnic Institute. His responsibilities include supporting customers in architecting deployable VPX systems including CMOSS/SOSA compliant designs. Jason has over 15 years of engineering experience in the defense industry supporting the U.S. Air Force, U.S. Army, and U.S. Navy as well as the IC community. In addition to architecting VPX systems, Jason also supports customers’ Assured Position Navigation and Timing (A-PNT) requirements.

Lisa Sarazin

Author’s Biography

Lisa Sarazin

Marketing Portfolio Manager

Lisa Sarazin is the Marketing Portfolio Manager for the C4ISR division of Curtiss-Wright Defense Solutions. Lisa has previously held roles in Product Marketing and Content Strategy in the telecommunications industry.

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