What's the difference between WebSocket API and TRKD Streaming API that's expected to be available also soon?
The TRKD streaming API is based on the same TREP 3.2 capability as the WebSocket API. So technically it's the same, the key difference will be that TRKD is a hosted service and has different commercials.
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