Office 365 Portal

Office 365:

https://login.microsoftonline.com
https://portal.office.com/
https://www.office.com/

https://outlook.office365.com

Microsoft 365 admin center:
https://portal.office.com/adminportal

Office 365 Security & Compliance:
https://protection.office.com/

Microsoft Azure:
https://portal.azure.com/

Azure Active Directory admin center:
https://aad.portal.azure.com/

Exchange admin center:

https://admin.exchange.microsoft.com/

Microsoft Online Password Reset:
https://passwordreset.microsoftonline.com
https://aka.ms/sspr
https://aka.ms/SSPRSetup

MFA Setup:
https://aka.ms/mfasetup

Company Apps:
https://account.activedirectory.windowsazure.com

Microsoft Azure Information Protection Document Tracking:
https://track.azurerms.com/