AS2 continues to be one of the most widely-adopted messaging standards in the world. Retailers, consumer product goods, hard-lines, insurance, financial services, petroleum industry, and government agencies have adopted AS2 to safeguard critical business information that represents billions of dollars each year.

AS3 offers its own unique features and provides security for the transport payload through digital signatures and data encryption. It also ensures reliable delivery through the use of receipts.

AS4 jump-starts ebMS v3 implementations by constraining the options for vendors to implement, as well as provides some specific guidance for using web services as a secure, document-agnostic B2B messaging platform.