Answer Posted / narendra

ALE-
Itz used within organisation(ie sap to sap)
It uses Trfc ports
Data stored in memory buffer
message format is single
uses R/3 connection
uses Idoc to transfer data

EDI-
Itz used across organisation(ie sap to non-sap vice versa)
uses File ports
Data stored in files
Multiple message formats
uses TCP/IP connections
uses EDI subsystems(middle ware systems) like makator, mq-
series.

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