Name of Casey's approach to memory management?

I looked around for a thread about this before posting, but apologies in advance if this is a dupe.

I'd really like to learn more about the method that Casey uses for memory. Is there a name for the approach or any good articles/tutorials about it?

I learn a lot from the vids but would really like to have a good read through about this specifically without having to hop through different videos, getting the info in pieces. :)

Thanks in advance!
I think we call it memory arenas.
Wikipedia calls it Region-based memory management
Thank you very much! :)