AS2 stands for Applicability Statement 2 and is a B2B messaging protocol used to transmit Electronic Data Interchange (EDI) documents from one organization to another safely, cheaply and quickly.
AS2 is a universal method for transporting data used by millions of businesses worldwide, including most major retailers, such as Amazon and Walmart
AS2 is one of the most popular methods for transporting data, especially EDI data, securely and reliably over the Internet. AS2 communications will often use certificates to secure data via encryption, based on public and private keys