I hardly ever come across information-level compression, and when I do it's regular ZIP. The OAIS-implementations my clients use require ZIP or TAR on the packa

I hardly ever come across information-level compression, and when I do it's regular ZIP. The OAIS-implementations my clients use require ZIP or TAR on the packages going in and out of the archiving software, in practice it tends to ZIP. Not sure whether the OAIS itself limits the options in the same way.