If Nomad provides workload scheduling, a runtime, workload networking, service networking, and some sort of overall orchestrator/controller plus an API, then it

If Nomad provides workload scheduling, a runtime, workload networking, service networking, and some sort of overall orchestrator/controller plus an API, then it has these same services. Running them in one process instead of ten doesn't make it more lightweight. You're free to run either on one node, but other than for toy purposes like demos and learning, why use a cluster compute system when you're not actually running a cluster?