Azure Active Directory is the glue that will enable single sign-on for business Office 365, Box, Salesforce, and more cloud services.If you’re supporting confused users, note that the next window does not say anything about “work or school account” or “business Office 365” or anything else comprehensible.
Microsoft also offers discounted services to college students and runs those through this database. This account is intended to be your long-term personal relationship with Microsoft.
This is the one that you’ll use continuously regardless of who your employer is from year to year.
You can buy Office 365 Personal for one computer, or Office 365 Home for up to five computers. If you log into with your Microsoft Personal account, you’ll see an identical tile in the upper left corner.
It’s up to you to remember which account you used to license Microsoft Office. Similarly, One Drive appears identical regardless of whether you log in with your work or personal accounts.
Your mental picture, then, should be that Microsoft Work is a company on one side of Seattle and Microsoft Personal is a different company on the other side of Seattle.