Are you using Kubernetes to orchestrate sandboxes, or have you built your own scheduler? I'm curious how you handle sandbox placement, resource allocation, and lifecycle management at this cost level.
Our own scheduler. We strongly considered kubernetes, but it wasn't worth taking on that complexity.
Part of the reason to not go with kubernetes was also the need to customize all these things around sandbox placement, managing live migration based on host resource utilization etc. which is all custom.