Services Operation Types

When you create a web service operation you must specify a service operation type. Service operation types determine the type of message processing.

There are four service operation types:

Term	Definition
Asynchronous Request/Response	The sending system invokes a service operation asynchronously and processes the response from the receiving system asynchronously. Unlike a synchronous operation type, the response is not processed on the same thread as the response, and it is processed sometime in the future.
Asynchronous to Synchronous	The sending system's asynchronous process sends a synchronous request to a remote system. The sending asynchronous system expects the receiving system to send a synchronous response back. The sending asynchronous system transforms the response and puts it back in the queue for asynchronous consumption.
Asynchronous – One Way	The service operation is queued and sent in near real-time. Processing on the sending system continues without a response from the receiving system.
Synchronous	The service operation is processed in real-time. Processing on the sending system does not continue until it receives a response from the receiving system.