I apologize for my discovery journey.
In 2015 Lennart was quoted[1] saying that "Initially we wrote it for testing purposes, but nowadays we consider it ready for many production uses. In fact CoreOS' rkt container tool makes use of it as the lower level container backend."[2]
[1] https://unix.stackexchange.com/questions/180161/why-is-systemd-nspawn-not-appropriate-for-production-deployments
[2] https://web.archive.org/web/20160414065508/https://coreos.com/blog/qa-with-lennart-systemd.html
In 2015 Lennart was quoted[1] saying that "Initially we wrote it for testing purposes, but nowadays we consider it ready for many production uses. In fact CoreOS' rkt container tool makes use of it as the lower level container backend."[2]
[1] https://unix.stackexchange.com/questions/180161/why-is-systemd-nspawn-not-appropriate-for-production-deployments
[2] https://web.archive.org/web/20160414065508/https://coreos.com/blog/qa-with-lennart-systemd.html
