Microsoft's "official" status page, which they will usually refer you to, can be found inside the admin center. They've been criticized in multiple previous incidents however, for experiencing an outage then telling people they can get full updates in the admin center, when the admin center requires a functioning logon to a service which is down at the time.

The page you've linked is kind of the "our real page is down" page, and after the issue is resolved what we usually see is all that replaced with something like "go check the admin center for outage information".