Microsoft 365 (Outlook on the web | Outlook for Windows/MacOS) - System Requirements
If you intend to use Microsoft Outlook desktop client or Outlook on the web to interact with your Office 365 account, please review the system requirements for the supported versions - Office/Outlook | Outlook on the web.
For complete details on the different versions (including licensing) of Microsoft Office available, please review Microsoft Office for UW-Owned and Personally-Owned Computers at UW-Madison.