service data may be placed on the host file system. Use `StateDirectory=` in
the unit files to enable such behaviour and add a local data directory to the
services copied onto the host.
+
+## Links
+
+[portablectl(1)](https://www.freedesktop.org/software/systemd/man/portablectl.html)<br>
+[systemd-portabled.service(8)](https://www.freedesktop.org/software/systemd/man/systemd-portabled.service.html)<br>
+[Walkthrough for Portable Services](https://0pointer.net/blog/walkthrough-for-portable-services.html)<br>
+[Repo with examples](https://github.com/systemd/portable-walkthrough)