SOA中可能的松耦合形式

	Tight coupling	Loose coupling
Physical connections	Point-to-point	Via mediator
Communication style	Synchronous	Asynchronous
Data model	Common complex types	Simple common types only
Type system	Strong	Weak
Interaction pattern	Navigate through complex object trees	Data-centric, self-contained message
Control of process logic	Central control	Distributed control
Binding	Statically	Dynamically
Platform	Strong platform dependencies	Platform independent
Transactionality	2PC (two-phase commit)	Compensation
Deployment	Simultaneous	At different times
Versioning	Explicit upgrades	Implicit upgrades