
Microsoft has taken measures to make things unpleasant for Office 2021 buyers by shortening the product's support period by three years and threatening buyers with "fear, uncertainty and doubt" that Office 2021 users will still be able to connect with various Microsoft 365 services. The notion that Microsoft is killing off its own Office brand possibly emerged from Microsoft's very real efforts to shift one-time-paying perpetual Office 2021 buyers over to the continuous-pay Office 365 subscription model.

Microsoft does sell Office LTSC plans for commercial and government users, which are purchased as "a one-time, 'perpetual' purchase," offering applications such as Excel, OneNote, Outlook, PowerPoint and Word, as described in this other Microsoft FAQ. We will also continue to offer one-time purchases of those apps to consumers and businesses via Office 2021 and Office LTSC plans. No, as part of Microsoft 365 you will continue to get access to apps like Word, Excel, PowerPoint and Outlook. Microsoft answered the question, "Is Office going away entirely?", in the Microsoft App FAQ as follows:

Everything else, though, is getting the "Microsoft 365" imprimatur. The drama of the Office name swap is further tamped down by this Microsoft 365 App FAQ, which explained that its perpetual-license Office products (sometimes called "boxed" products), such as Office 2021 for consumers and small businesses, will still use the Office branding.
