LTSC is an official edition designed by Microsoft for enterprise customers running mission-critical hardware (like medical equipment and ATMs). It comes out of the box without Cortana, the Windows Store, or bloatware games. Crucially, it remains officially supported by Microsoft with security patches, giving you the lean performance of a "lite" system without sacrificing modern security.
: Modern software, including newer versions of Adobe Creative Cloud, recent Microsoft Office suites, and the latest PC games (especially DirectX 12 Ultimate titles), require Windows 10 version 20H2 or higher to install.