AS3 (Applicability Statement 3), RFC 4823, is a standard by which vendor applications communicate structured business-to-business data over the Internet using File Transfer Protocol (FTP). It is an EDI protocol.

While AS2 is a transfer protocol, AS3 is a message standard that focuses on message formatting. Where AS2 requires dedicated AS2 server and client to send messages, AS3 is flexible; once an AS3 message is composed, it can be transmitted via any other protocol – FTP, SFTP, HTTPS, and more – as long as both the sender and recipient can access the message's location. Also unlike AS2, AS3 is a push-pull protocol and does not require an ongoing connection.[1]

See also

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References

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  1. ^ "AS2, AS3, and AS4 File Transfers". goanywhere.com. Retrieved 2020-06-04.
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RFC 4823