By default, Exchange Online allows other users in your tenant to see limited details of your availability when scheduling meetings. More information can be displayed by updating the calendar permissions for mailboxes. This is easy to do with PowerShell, but needs to be done on an ongoing basis because Exchange Online doesn’t have an organization or mailbox plan setting to assign the value to new mailboxes.
A recent report puts the availability of Azure behind Google and Amazon Web Services (AWS). Office 365 tenants depend on Azure in a variety of ways. The recent problems occurred in a variety of places and there’s no common thread connecting the different issues. It seems like Azure has had a run of bad luck, so let’s hope that the bad days have passed and reliability improves.