For the TREP deployment, does it need to be daemon-less?
It is not a requirement to use the TREP daemon-less config to use this API. In fact, the latest ADS version (3.2) can be used and cascaded from older TREP deployment to use this feature.
This question was first asked in an Introduction to the Elektron WebSocket API webinar (29th of Nov). Please see here: Introduction to the Elektron WebSocket API