NATO Standardization Office
The NATO Standardization Office (NSO) (former NATO Standardization Agency, NSA; French: Bureau OTAN de normalisation) is a NATO entity created in 1950 to support Allies in standardization activities. The NSA was formed through the merger of the Military Agency for Standardization and the Office for NATO Standardization.
Source: Wikipedia — NATO Standardization Office (CC BY-SA 4.0)