The Professional Plus 2021 LTSC package is the most comprehensive volume license available, featuring a complete suite of desktop applications for Windows:
| | License Model | Cloud Integration | Support Period | | --- | --- | --- | --- | | Office LTSC 2021 | Perpetual | No | 5-7 years | | Microsoft 365 | Subscription | Yes | Ongoing | | Office 2019 | Perpetual | No | 5 years | office ltsc professional plus 2021
Understanding Microsoft Office LTSC Professional Plus 2021 Microsoft Office LTSC (Long-Term Servicing Channel) Professional Plus 2021 is a "perpetual" version of the Office suite designed specifically for commercial and government customers who require a fixed, static feature set. Unlike the subscription-based Microsoft 365, this version is a one-time purchase that does not receive new feature updates after its initial release. Core Included Applications Office LTSC Professional Plus 2021 provides the most comprehensive set of desktop applications available in the LTSC line: Standard Apps The Professional Plus 2021 LTSC package is the