A2A

Application 2 Application Services

| | Application 2 Application Services Application 2 Application Services is services which orchestrates services from several applications, typically asynchronous and workflow-backed. I.e. a Auction type request against a set of suppliers or an booking/order/delivery process. |


Characteristics Services orchestrated to produce real busuness value - Workflow-oriented processes - Orchestrated functionality from several services - ACS/CS services as Business/Domain Objects - External applications for sub-processes & tasks - Long running processes - Should not have any long-running transactions - Could (should) have cache (state full) Patterns for Application 2 Application Services ---		Application 2 Application Services

Design rules


P1. A service shall have one named owner	P2. A service shall provide documented business value	P20. All services shall be in the service universe	P21. A service shall be categorized (OW SOA category)	P22. A service shall have an "authentication, authorisation, endpoint strategy"
P23. A service shall document its Service Level Agreement SLA (response time, availabillity++)	P3. A service shall do one only thing, and one thing well	P30. A service shall have a versioning strategy (ACS, CS)	P31. A service shall provide for audit and monitoring of service usage	P31. A service shall provide for audit and monitoring of service usage
P41. A service shall provide heartbeat and traffic monitoring	P90. A service shall have a documented coupling to the contractual and requirement for service usage

[Policy Rules for A2A services]

Other technical details

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