Implementing Microsoft Dynamics 365 for Finance and Operations Apps - Second Edition

Synchronous or asynchronous?

One of the key decisions to be made is whether integration should be real-time (synchronous) or asynchronous. The following table analyzes both messaging approaches and describes the scenarios when one should be selected over the other:

Type	Pros	Cons	Good for	Examples
Synchronous	Fail-safe communication. Error/exception handling.	Tight coupling between systems. Blocks sender until the receiver is finished. Network dependency; calling system must be available.	Transaction processing across multiple systems.	Mobile app/handheld for PO receiving, SO picking, inventory on-hand, and so on.
Asynchronous	Decoupled systems. Does not block sender. The integrating system doesn't need ...