(1) (AppleTalk Filing Protocol) The file sharing protocol used in an AppleTalk network. In order for non-Apple networks to access data in an AppleShare server, their protocols must translate into the AFP language. See file sharing protocol.

(2) (Advanced Function Presentation) A page description language from IBM introduced in 1984 initially as Advanced Function Printing. It was first developed for mainframes and then brought down to minis and workstations. AFP is implemented on the various platforms by Print Services Facility (PSF) software, which generates the native IBM printer language, IPDS, and depending on the version, PostScript and LaserJet PCL as well. IBM calls AFP a "printer architecture" rather than a page description language.