In the soon retired Office 365 Communications API, you had access to the list of features (and their status) of a single service (i.e from "Exchange Online" you got also the List "Backend Data Processing", "Networking Issues", "Sign-in", and so on...).
In the graph replacement for this API, there is no way to get the list of features of a service yet.
We used the old API to get a detailed view of the microsoft service landscape to inform our users if a problem occurs. Now we cannot do this anymore
Please add the list of service feature status to the API again (perhaps also via an $expand parameter)