For documentation on `step-ca.service`, see [Running `step-ca` As A Daemon](https://smallstep.com/docs/step-ca/certificate-authority-server-production#running-step-ca-as-a-daemon).
For documentation on `cert-renewer@.*`, see [Automating Certificate Renewal](https://smallstep.com/docs/step-ca/certificate-authority-server-production#automate-x509-certificate-lifecycle-management)
