systemd supports a number of integration features that allow VMMs certain access to the inner state of VM guests for provisioning, synchronization and interaction, and many of them are little known, even though very very useful. In this talk I'd like to shed some light on many such integration points, such as SMBIOS type 11 based system credential provisioning; state propagation/readiness notification via AF_VSOCK; SSH support via AF_VSOCK, and so on.