General question -> Access mutiple tenants from one Azure tenant

I have multiple O365 tenants. Now I want to do some powershell automation using Azure automation. But I prefer not to setup the Azure automation on all tenants but I want to use one Azure tenant to access/service all O365 tenants. 

Tried to find it in the documentation but so far not a clear yes or no.

To make it somewhat more complex. I want to start the powershell script from a SharePoint tenant. So SharePoint tenant X has to communicate with Azure tenant Y.

Is this possible?