Understanding EDI Transfer with AS2 Protocol

Electronic Data Interchange (EDI) remains a cornerstone of B2B communication, and the AS2 (Applicability Statement 2) protocol has emerged as one of the most secure and reliable methods for transmitting this data. AS2 enables organizations to send EDI documents over the internet using digital certificates and encryption, ensuring both security and non-repudiation.

The AS2 protocol works by wrapping EDI documents in a digital envelope that provides multiple layers of security. When sending an EDI document via AS2, the data is first digitally signed, then encrypted using digital certificates. This process ensures that only the intended recipient can decrypt and read the information. Upon successful delivery, the receiving system automatically generates a Message Disposition Notification (MDN), serving as a digital receipt.

Major retailers and businesses prefer AS2 because it offers several key advantages: real-time transmission capabilities, reduced communication costs compared to VANs (Value Added Networks), and robust security features that meet strict compliance requirements. The protocol supports various data formats beyond traditional EDI, including XML, CSV, and other structured documents.

For organizations implementing AS2, proper certificate management and regular monitoring of MDNs are essential for maintaining smooth operations and ensuring successful document exchanges.