Several products are now branded with the “365” option, with new options announced last week

https://redmondmag.com/articles/2017/09/28/additional-microsoft-365-options-coming-next-week.aspx

In August, Microsoft launched a public preview of Microsoft 365 Business, intended for organizations with fewer than 300 users. That bundle begins to reveal the variation of the Microsoft 365 offerings. While it broadly addresses productivity, client, management and security licensing, the specifics of the bundle consisted of Windows 10 Pro upgrade rights, Windows Defender, Office, 1TB of file storage, a 50GB mailbox, online meetings, Microsoft Teams, Outlook Customer Manager, Bookings, MileIQ and additional security and management features. A number of additional versions were unveiled this week at Microsoft Ignite, including Microsoft 365 F1 for so-called “firstline workers” and two new Microsoft 365 versions for education.