From the Web site: 

CYBER-IDENTITY is key to the further development of the electronic world.

UNIQUE BUSINESS IDENTIFIERS based on international standard identifier schemes and their registries are fundamentally important for eBusiness and eGovernment.

A blog posting by David Connelly, CEO at Open Applications Group, on the joint OAGi and OASIS webinar highlighting OAGIS BODs using the AS4 profile.

Connectivity to small and medium-sized companies that cannot afford, or lack the skills, to operate an AS2 messaging gateway server successfully, remains a challenge for many companies.  Recently, the new AS4 B2B protocol was developed.  It has all the functionality that AS2 offers today, but also provides better support for SMEs and is based on more modern Web Services technology.