FY21 NDAA (Pub. L. 116-283) Section 804 — OT / rapid acquisition
Summary
Section 804 of the FY21 NDAA (the William M. (Mac) Thornberry National Defense Authorization Act, Pub. L. 116-283), a statutory provision requiring implementation of modular open systems approaches (MOSA) across DoD acquisition. It directs the Under Secretary of Defense for Acquisition and Sustainment to issue regulations and guidance mandating delivery of machine-readable modular system interfaces on defense contracts, and amends 10 U.S.C. 2446a to extend MOSA and rights in interface software. The provision governs prototyping, acquisition, and sustainment of weapon systems generally; it does not itself address other-transaction, CSO, or prize authorities.