Here is a redhat blog about it: https://www.redhat.com/en/blog/quadlet-podman

This docs page has more details: https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/10/html/building_running_and_managing_containers/porting-containers-to-systemd-using-podman

And last, this page shows most of the options you’d expect to find: https://docs.podman.io/en/latest/markdown/podman-systemd.unit.5.html