I was reading up on OpenDJ REST API and came across this section in the documentation - LDIF File Access.
The LDIF connection handler lets you make changes to directory data by placing LDIF in a file system directory that OpenDJ server regularly polls for changes.
I admit I did not know such a feature exist. :)
Nevertheless, I personally think this feature is useful for some deployments where integration with legacy systems are required but there is no endpoint to connect to.
Yes, the good old days of file-exchanges! :> It worked like a charm, wasn't it? to a certain extent ...