Office 365 is just one part of the Microsoft Online Services and you can use the Microsoft Online Portal to manage your Office 365 environment as you’ve seen in my previous blog posts.
Microsoft Azure is another part of the Microsoft Online Services. In Microsoft Azure you can use all kinds of services, servers, virtual machines and… Azure Active Directory.
The portal for Windows Azure can be found on http://manage.windowsazure.com, but when you try to logon using your tenant admin account (the one you’re using for Office 365 as well) you’ll get a warning that no subscriptions are found. This makes sense because there’s only an Office 365 subscription to this account.