Reporting licenses

I am looking for a way for reporting license usage for each customer. I want to use application IDs and secrets so we can automate the retrieval of license data.

We want to know how many licenses there are in a tenant and how many there are assigned/in use.

I found an example that uses the MSOnline module: https://www.serverwatch.com/server-tutorials/managing-and-monitoring-office-365-licenses-assigned-to-office-365-users.html

1) is there a way to use application IDs and secrets to authenticate and retrieve the data with the MSOnline module?

2) Or is there a Graph API alternative so I can use the same mechanism that I use to retrieve alerts?

Regards,

Martijn