It’s hard to escape the headlines around the Modular Open Systems Approach (MOSA), open standards, and individual initiatives such as those from The Open Group FACE Consortium, the creators of the Future Airborne Capability Environment (FACE) Technical Standard. In 2004, the Open Systems Task Force published a Program Manager Guide titled “A Modular Open Systems Approach (MOSA) to Acquisition.” Since then, the industry has seen a progression in policy guidance that raised the profile of MOSA and its applicability within military systems to enable success on the battlefield while lowering acquisition costs and promoting innovation.