Honest question: Is it Nomad?

Because I've literally spent a couple hours watching Hashicorp videos on Nomad, and I know how to install and secure it, but I still have no idea what TF Nomad is/does. Maybe a distributed cron, that apparently has the ability to spin up a million containers?

Edit because of downvote: No, really, I'm serious. Any references to how Nomad solves the Swarm/K8s problem, because I've spent my spare time this week trying to understand it and still don't know what Nomad even is.