Upgrade AlmaLinux 8.6 to AlmaLinux 9.0

Is it possible to upgrade AlmaLinux 8.6 to AlmaLinux 9.0 with dnf or smiliar or do I need to make a fresh install from ISO? Thank you.

Fresh install. The Alma 9 is essentially a different distribution than Alma 8.

The ELevate tool might at some point support in-place conversion from 8 to 9, but IMHO fresh install is a way more clean approach.