: Pirating software violates copyright laws. Additionally, modified builds are often unstable and prone to crashing. Office 2021 and Office LTSC for Windows and Mac FAQ
: It is primarily for enterprise devices that don't need cloud-backed features or frequent changes.
The specific version you've identified——refers to a 64-bit release of Microsoft’s "Long-Term Servicing Channel". This edition is designed for specialized environments, such as regulated systems that cannot receive frequent feature updates or lack constant internet access.