The basic installation in Azure is done with the image CentOS-based 7.x (currently 7.5, see screenshot).
We recommend the VM SIZE B2s as minimum size.
Access to the root user is not available by default. A user is specified when the VM is set up, we recommend that you name the user "jtel".
After the provisioning of the VM is completed and access via SSH is possible, the basic installation is complete.
Check if everything is OK
After the basic installation, you should be able to access the computer via SSH and log in with root.
If the customer installs the operating systems, this is the handover point to the project technician.