IFF (Interchange File Format) is a chunk-based file container format developed by Electronic Arts and Commodore in 1985. It became the standard for storing multimedia data on the Amiga, encompassing formats for images (ILBM), audio (8SVX), and animations. The architecture relies on structured chunks with four-character type identifiers, enabling cross-platform data interchange and widespread adoption throughout Amiga graphics, audio, and desktop publishing software.