Four different technologies are used in AVIF. The architecture combines elements of the ISO BMFF Byte Stream Format with those of IFF/HEIF and MIAF, which enable image processing functions and mapping of the AV1 KeyFrame.
Primary sources
1. AVIF - The Full Guide and FAQ2. AVIF AOMedia Specification3. AVIF Wikipedia4. Jake Archibald Article5. AVIF Netflix article