TBA.
Gateways can receive jobs using RTMP and HTTP and return results using HTTP and HLS. Each of these have constraints, performance implications, etc.
Running and using a Gateway should be understandable for someone who is not proficient with the media industry.
We need to provide them with everything to go from 0-100 for a very basic media platform. Maybe some high level overview of the core components (+common software which does that), how to use videogen/ffmpeg/gstreamer, how to scale up / load balance, etc