It&#x27;s also not true though.<p>Running a LING unikernel gets you a huge set of tracing and debugging capabilities that aren&#x27;t 100% compatible with what&#x27;s provided by BEAM, but it&#x27;s close and a couple orders of magnitude better than what almost any other language provides for mucking with a live system; unikernel or not.<p>Running Erlang via Rumprun gets you a standard BEAM&#x2F;erts release packaged as a VM image or a bootable ISO, and that is just straight up Erlang.  So all the absolutely excellent debugging, tracing, and profiling facilities that any random Erlang application has access to are also accessible when deployed as a unikernel (rumpkernel).