As you can tell from this simple model, ebXML specifications provide the following advantages:
Standardized way of describing B2B Protocols and their associated information models
Registration and storing B2B Protocol and Information Meta Models so they can later be shared and reused
Discovery and sharing of information about each participant including:
Supported B2B Protocols
Business service interfaces offered in support of each B2B Protocol
Business messages exchanged between their respective business service interfaces
Technical configuration of any supported transport, security, and encoding protocols
Way to register the previously described information for later access and retrieval
Way to describe the execution of mutually agreed-upon business arrangements derived from information provided by each participant from the discovery of information; these arrangements are called Collaboration Protocol Agreements (CPAs)
Standardized business messaging service framework enabling interoperable, secure, and reliable exchanges of messages between Trading Partners
Reliable way for configuring the respective messaging services to engage in agreed-upon B2B Protocols, in accordance with constraints defined in any predefined business arrangement