In what types of environments or requirement situations , should one implement OPC UA architecture and what type of set up guarantees that it has been exploited to its full potential?
It seems to me that it’s difficult to say what strategy would be “more used” generally. Different approaches have their own benefits. However the mainly a good number typical scenario is to write directly to the data source.
For more details and information about this subject, i suggest you to see links on topic.
(PDF) Analysis of OPC UA performances - ResearchGate