The App-V 4.x versions produce packages using the SFT format,[REF] along with additional files based on a modified version[REF] of the Open Software Description (OSD) specification originally proposed to the WC3 in 1997 by Microsoft and Marimba [REF].
Upon receiving the package, the client will download appropriate metadata, and possibly (dependent on both package and client configurations) some or all of the package components.