See Andrew File System (AFS).

Andrew File System. A specific instance of a distributed file system (DFS), developed at Carnegie-Mellon University (CMU), allowing multiple file systems to be shared between organizations and treated, at the user interface level, as one giant file system.

Address Finder System and Service

Arch Filament System. In solar-terrestrial terms, a bright, compact plage crossed by a system of small, arched filaments, which is often a sign of rapid or continued growth in an Active Region.

American Fisheries Society priority species

American Field Service

American Foundrymen"s Society.

Advanced Financial Solutions

Aviation Fleet Solutions

Advanced Flying School

Australian Financial Services

Australian Forestry Standard

Affordability and Financial Sustainability