AS2
AS2 (Applicability Statement 2) is a secure, reliable protocol for exchanging business-to-business (B2B) data over the internet, commonly used for EDI (Electronic Data Interchange) transactions. It ensures data integrity, confidentiality, and non-repudiation through digital signatures and encryption, typically using HTTP or HTTPS as the transport layer. AS2 is widely adopted in industries like retail, healthcare, and logistics for automating document exchanges such as purchase orders and invoices.
Developers should learn AS2 when building or integrating systems for B2B data exchange, especially in compliance-heavy sectors like supply chain or healthcare where secure, auditable transactions are required. It's essential for implementing EDI solutions that need to meet standards like HIPAA or retail industry mandates, providing a robust alternative to older protocols like FTP or AS1.