I'm thinking of simplicity. No VMs, no containers, just a single binary. The majority of microservices I've written would fit into a system like this just fine

I'm thinking of simplicity. No VMs, no containers, just a single binary. The majority of microservices I've written would fit into a system like this just fine. NodeJS is built around the idea that a single thread of execution is enough for a stupidly large % of backend code. On top of that is ton of infrastructure to deploy slews of 100 line JS microservices that each do one thing. So, back to basics. No VM, no disk at runtime, a single statically linked binary running on top of nearly bare metal. Available memory is whatever space the program code doesn't take up. Ignoring l3 being unaddressable, I wonder if UEFI applications are powerful enough to pull something like image deployment off. This is probably all less efficient than the current Russian doll system of VMs and containers in use right now, but it is fun to imagine!