The WCF service binding (or the B in the WCF endpoint ABCs) is the channel stack that ties up how a service actually transmits data across the wire. The stack is made up of individual elements that make up the message communication. This includes elements that control security options, session capacity, and transaction capabilities. They are also used to determine how a message is actually encoded during transmission, whether that is in text/XML, binary format, or the new Message Transmission Optimization Mechanism (MTOM) format.

WCF provides a series of bindings for the available WCF transports, which offer the most compatible and logical component order for a given transport. Let's review the key bindings that are also available with BizTalk Server 2013 as adapters: