Hi Gockle,
Compared to other data structures that need to carry information, EDI is one of the structures that has actually developed into just a few heavily used standards around the world. In North-America and Australasia it is mainly
Ansi X12, In Europe mainly EDIFACT. You have a few other standards from the past that are still being used sometimes
(VICS, Tradacoms, ODETTE) but X12 and EDIFACT are the two main ones. The biggest thing (but not a concern) concerning EDI at the moment is probably EDIINT (EDI over the Internet) and AS2. Some big US and European companies are pushing it (Wal Mart, Lowes, Carrefour) which will probably mean they'll force their suppliers to use it as well. See only how much it of a topic it is in this EDI forum...