Editing Electronic data interchange (section)

== Transmission protocols ==
EDI can be transmitted using any methodology agreed to by the sender and recipient, but as more trading partners began using the Internet for transmission, standardized protocols have emerged.

This includes various technologies such as:

* mModem (asynchronous and synchronous)
* [[File transfer protocol|FTP, SFTP and FTPS]]
* Email
* [[HTTP]]/[[HTTPS]]
* [[AS1 (networking)|AS1]]
* [[AS2]]
* [[AS4]]
* [[OFTP]] (and OFTP2)
* Mobile EDI

When some people compared the synchronous protocol 2400 bit/s modems, [[CLEO (router)|CLEO]] devices, and [[value-added network]]s used to transmit EDI documents to transmitting via the Internet, they equated the non-Internet technologies with EDI and predicted erroneously that EDI itself would be replaced along with the non-Internet technologies. In most cases, these non-internet transmission methods are simply being replaced by [[Internet]] protocols, such as FTP, HTTP, [[telnet]], and e-mail, but the EDI documents themselves still remain.

In 2002, the [[IETF]] published <nowiki>RFC 3335</nowiki>, offering a standardized, secure method of transferring EDI data via e-mail. On July 12, 2005, an IETF working group ratified RFC4130 for [[MIME]]-based HTTP EDIINT (a.k.a. [[AS2]]) transfers, and the IETF has prepared a similar RFC for FTP transfers (a.k.a. [[AS3 (networking)|AS3]]). EDI via web services (a.k.a. [[AS4]]) has also been standardized by the OASIS standards body. While some EDI transmission has moved to these newer protocols, the providers of [[value-added network]]s remain active.

=== Internet ===
As more organizations connected to the Internet, eventually most or all EDI was pushed onto it.  Initially, this was through ad hoc conventions, such as unencrypted FTP of ASCII text files to a certain folder on a certain host, permitted only from certain IP addresses. However, the [[IETF]] has published several informational documents (the "Applicability Statements"; see below under '''Protocols''') describing ways to use standard internet protocols for EDI.

As of 2002, [[Walmart]] has pushed [[AS2]] for EDI.<ref>{{cite web|url=https://blogs.opentext.com/as2-and-internet-edi-nine-years-later/|title=AS2 and Internet EDI – Nine Years Later - OpenText Blogs|date=9 September 2011|access-date=4 September 2017|archive-date=4 September 2017|archive-url=https://web.archive.org/web/20170904112020/https://blogs.opentext.com/as2-and-internet-edi-nine-years-later/|url-status=live}}</ref> Because of its significant presence in the global supply chain, AS2 has become a commonly adopted approach for EDI.
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