The animation depicts how SOAP is bound to transport protocols, which enables SOAP messages to be carried across the network.
In the animation, a system labeled Application 1 is connected with an arrow to another system labeled Application 2. Below the connecting arrow is a block that has Transport Protocols written in it. Another block that has SOAP written in it moves in and aligns itself horizontally with the Transport Protocols block. An envelope moves along the SOAP block between Application 1 and Application 2 systems.