custom flatbuffer schema for backend

[fjs-bbd]

Is it possible to define a custom flatbuffer schema.
I want to communicate the information generated Ahead of Time , to my backend runtime in a custom format i.e. my own data structures.
Is it possible to do this. If yes Is there some guide on how to do this ?

Also is it mandatory to use flatbuffers OR any other mechanism can be used ?

[cccclai]

The payload for the backend is completely defined by the backend. Some backends (like arm) uses flatbuffers, some use their own schema (like qualcomm and coreml).