Office 2013 now has cloud connectivity through SkyDrive and Office 365.
Office now also has Accounts, settings and profiles.
Sometimes you want to switch between offline and online modes of Office 2013 or you may also want to switch between accounts. For example, I have two different accounts, one I created using Windows 8 and other account I had for my MSDN.
We can switch between accounts by clicking the Switch Account link on our Account area in the right side corner.
Switch Account dialog will also let you create a new account or login to your other accounts.
After providing my account details, now I am connected to my Office 365 online account.