We have a migration from sap xi 7.0 to sap PI/PO 7.4 .
As per discussion with customer we need to adopt the SOA architecture and canonical model in pi 7.4.
Most of the interfaces are File to File and File to RFC and File to Idoc. There is no any single webservice(SOAP,Proxy) interface in XI 7.0.
So if we want to go for the SOA Architecture and canonical model what should be the approach and also want to know does that really help ?
As per my understanding for SOA is it is standard/customize web Service which is reusable via service registry. since there is no Proxy and soap adapter has been used is it really helpful to change to the service based ? Because we have to convert all file based into proxy or idoc scenario. please comment.
I dont have clue about canonical model...Please give one example if you have already implement it in sap PI.