I could only find something about them generally using kubernetes (from 2017) https://www.linux.com/news/how-disney-realizing-multi-cloud-...

Is there any recent article discussing the tech behind Disney+ specifically?

apparently not at launch https://twitter.com/rothgar/status/1194150447604355072

I would be surprised if they did. Kubernetes takes a long time to build up internal expertise around, whereas I imagine the mouse can throw money at AWS all day.

Bamtech is heavily based on ECS and other AWS services.