Space Systems MOSA Interface Standards Alliance


Expanded Alliance Charter

With the success of the IEEE-ISTO MOSA Interface Standards Alliance in speeding up the committee formation process and development/update of Interface Standards, the Alliance Executive Board recently voted to allow the expansion of the Alliance charter to also include development or update of Enterprise Engineering Standards (formerly known as Mission Assurance Standards).  The newer, larger charter will help move legacy Governmental Standards (particularly the Space Systems Command Standards) toward better compliance with the OMB Circular A-119 for the use of non-Governmental voluntary consensus Standards. The first Enterprise Engineering Standard update by an Alliance committee will be the “Test Requirements for Ground Systems” Standard (formerly SSC-S-024).

Who we are

The Space Systems MOSA Interface Standards Alliance is interested in rapidly developing modular open system approach (MOSA) compliant space system standards that will enable interoperability at key system interfaces. Collaborating with the Institute of Electrical and Electronics Engineers Industry Standards and Technology Organization (IEEE-ISTO) will enable the Space Systems MOSA Interface Standards Alliance to leverage agile development methods to expedite the standards development process.

The Space Systems MOSA Interface Standards Alliance is a government-guided collaboration with industry for the purpose of voluntary consensus development of space system interface standards, in accordance with Public Law 104-113, and OMB Circular A-119. Furthermore, in accordance with the MOSA laws specified in the 2015/2017/2022/2021 National Defense Authorization Acts (NDAA), the space system interface specifications will enable and foster interoperability at key system interfaces

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What We Do

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The Space Systems MOSA Interface Standards Alliance consists of committees and subcommittees developing interoperability standards that meet Enterprise-defined objectives.  The collection of standards developed by the alliance will synergistically support Enterprise objectives.  By creating standardized interfaces, the Enterprise seeks to benefit from a wider range of industry innovations and bring newer technologies to our warfighters faster.  Standardization will also enable and foster the ability of non-traditional companies to enter the established market.


The objective of the Space Systems MOSA Interface Alliance is to have multiple committees/subcommittees developing interface standards across all segments of space systems.  The Alliance will target a subset of interfaces within and across the Space, Ground, Launch, and User segments.

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